I Tracked My Time for 30 Days. 40% of It Was Wasted.

A management consultant with ADHD discovered the uncomfortable truth about where his hours actually go.

7 min read
1650 words
4/1/2026
Nobody wants to know where their time goes. I didn't. For years I told myself I was productive because I was busy. My calendar was full. My inbox was empty (mostly). I got things done. But there was this nagging feeling that I was working harder than the results justified. So I tracked every minute of my day for thirty days. Every. Single. Minute. I used a simple time tracker on my phone. I logged what I was doing in real time, not retroactively (retroactive time tracking is just lying to yourself with extra steps). The results made me physically uncomfortable. Of the roughly 14 hours I was "awake and functioning" each day, I spent 5.6 hours on things that produced zero meaningful output. Not zero output in a harsh, productivity-bro sense. Zero output in a "this literally didn't need to happen" sense. I'm Tom Brennan. Former management consultant. Diagnosed with ADHD at 35, which explained a lot. I spent years selling productivity frameworks to Fortune 500 companies while privately struggling to manage my own calendar. The irony was not lost on me. Here's what thirty days of honest time tracking revealed, why your time estimates are almost certainly wrong, and what actually worked when I tried to fix the problem (spoiler: most productivity advice is garbage).

How to Use

The Setup I defined five categories for my time tracking: 1. Deep work: Focused, uninterrupted effort on my most important tasks. Writing proposals. Analyzing data. Building client presentations. The stuff that actually moved my career and income forward. 2. Shallow work: Necessary but low-value tasks. Email. Scheduling. Administrative stuff. Filing expense reports. Important enough to do, not important enough to spend much time on. 3. Communication: Meetings, calls, Slack messages that required real thought. Both productive (client strategy calls) and semi-productive (team syncs that could have been emails). 4. Consumption: Reading articles, scrolling Twitter, watching YouTube "for research." Sometimes genuinely useful. Usually not. 5. Waste: Things I did instead of what I should have been doing. Phone scrolling that wasn't even enjoyable. Reorganizing my desk. Making and remaking to-do lists. "Researching" tools I'd never buy. The productivity theater that feels like work but isn't. The Results (Week 1) Deep work: 9.2 hours (13.1%) Shallow work: 17.8 hours (25.4%) Communication: 14.2 hours (20.3%) Consumption: 12.6 hours (18.0%) Waste: 16.2 hours (23.1%) Total tracked: 70 hours out of an expected 98 hours (14/day × 7 days). The missing 28 hours were sleep, eating, and transitions I forgot to log. The first thing that hit me: 9.2 hours of deep work in a week. That's 1.3 hours per day. One point three. I thought I was working 10-hour days. In reality, I was doing meaningful, focused work for barely over an hour a day. The second thing: 23.1% waste. That's a full day and a half per week spent on things that produced nothing. Not rest (rest is valuable). Not leisure (leisure is intentional). Waste. Stuff I didn't enjoy, didn't need to do, and couldn't justify even in hindsight. I ran these numbers through our time calculator and it confirmed: at my current rate, I was spending 2,044 hours per year on waste and consumption combined. That's an entire full-time job's worth of hours producing nothing. Week 2-4: The Pattern Stabilizes After four weeks, the numbers averaged out: Deep work: 11.8% (up slightly as I got more honest) Shallow work: 23.4% Communication: 21.1% Consumption: 16.8% Waste: 19.5% The waste number dropped from 23% to 19.5% just because I was tracking it. The Hawthorne effect is real. But even at 19.5%, that's 13.7 hours a week of pure waste. Over a year: 712 hours. Eighty-nine full eight-hour days. The communication category bothered me too. Twenty-one percent of my time in meetings and calls. I analyzed those hours and found that roughly 40% of meetings could have been emails or Slack messages. Another 30% were meetings I didn't need to attend but was invited to "just in case." The "consumption" category was the most humbling. Sixteen percent of my time reading articles and scrolling feeds. Some of it genuinely informed my work. Most of it was the digital equivalent of snacking — I wasn't hungry, it wasn't nutritious, but it was there. Where the Time Actually Went Phone: 3.2 hours/day average. Not calls. Not texts. Screen time. Social media, news, random apps. My phone's built-in screen time tracker confirmed this. The time tracker on my phone showed I was spending nearly as much time on my phone as I was in deep work. Email: 2.1 hours/day. I checked email 47 times on an average day. Forty-seven. Most checks lasted under 30 seconds. But each one broke whatever focus I had. Research shows it takes 23 minutes to fully refocus after an interruption. I was interrupting myself 47 times a day. "Getting ready to work": 1.4 hours/day. Making coffee. Organizing my desk. Opening tabs. Closing tabs. Making lists. This is the ADHD tax. Transition time that neurotypical people might spend 15 minutes on took me over an hour. The worst discovery? My "most productive" days weren't the days I worked the longest hours. They were the days I had the highest ratio of deep work to total time. A day with 3 hours of deep work and 6 hours total felt incredibly productive. A day with 2 hours of deep work spread across 12 hours felt exhausting and pointless. Duration doesn't equal output. Ever.

Pro Tips

Track your time for at least two weeks before trying to change anything. The tracking itself changes behavior (Hawthorne effect), so you need the data to stabilize. Week one is unreliable. Weeks two through four give you a more honest picture. Use our time calculator to total up your categories at the end of each week. Define your categories before you start. Don't use vague categories like "work" and "personal." Split "work" into deep work, shallow work, communication, consumption, and waste. The granularity matters because you can't fix a category called "work" — you can only fix specific behaviors within it. Measure deep work hours, not total hours. This is the single metric that matters. If you can get to 3-4 hours of deep work per day, you're in the top 10% of knowledge workers. Most people are at 1-2. I've never met someone consistently doing 6+ hours. If you think you are, you're probably miscounting shallow work as deep work. Use the Pomodoro technique as training wheels, not a lifestyle. Twenty-five minutes of focus, five-minute break. It's not a permanent solution (I have ADHD, and the rigidity eventually became its own distraction), but it's excellent for building the focus muscle. Our Pomodoro calculator can help you figure out how many cycles you can realistically fit in a day. The only productivity hack that actually worked for me: time blocking. Not the color-coded, every-minute-scheduled version. The simple version. Block 2-3 hours in the morning for deep work. Protect that block like your life depends on it. Everything else fits around it. Email, meetings, admin — all of it waits until the block is done. This single change took my deep work from 1.3 hours/day to 2.8 hours/day within a month.

Common Mistakes to Avoid

Thinking busy equals productive. Busyness is the most convincing form of laziness because it feels like work. Answering emails feels productive. Attending meetings feels productive. Reorganizing your Notion workspace feels productive. None of it produces output. Deep work produces output. Everything else is maintenance at best, theater at worst. Trying to eliminate waste entirely. You can't. You're human. A 10-15% waste rate is probably healthy and sustainable. The problem is when waste is 20-30% and you don't know it because you're not measuring. The goal isn't zero waste. It's knowing your actual ratio and keeping waste below 15%. Tracking time retroactively. "Let me remember what I did today and fill it in" is just creative writing. You will overestimate deep work and underestimate waste because nobody wants to write "spent 45 minutes scrolling Instagram" in their time log. Track in real time. It's annoying. Do it anyway. The data is only useful if it's honest. I was a management consultant selling productivity solutions to companies while personally wasting 40% of my time. The frameworks I sold were fine, technically. But they assumed something I didn't have: an honest picture of where my own time was going. You can't optimize what you don't measure. Track first. Then decide what to change.

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