In the early 2010s, I wrote a self-help book that catapulted me into a strange universe. I went from working an office job in the suburbs to walking onto TV show sets where I was often introduced as “Captain Awesome” or “The Happy Guy!” I was thrust into becoming a spokesperson for positivity, happiness, and intentional living.

But there was just one problem: My life was a mess.

I originally wrote the book as a series of blog posts to cope with the pain of my marriage falling apart and the heartbreak of losing my best friend to suicide. I moved to a bachelor apartment downtown and lived alone for the first time in my life. I began experiencing deep loneliness, chronic sleeplessness, and endless anxiety.

My solution to these deep emotional issues was to become a workaholic. I would work in the suburbs all day, pick up a burrito on my way downtown, and then set it on my desk while working until one or two in the morning until my alarm buzzed the next day at 6:00 a.m.

I started taking pills to help me fall asleep and pills to help me wake up. I lost 40 pounds due to stress. I had headaches and chest flutters and stomach bubbles all day. Black bags slowly expanded like puddles under my eyes. When coworkers began asking if I was getting enough sleep, I bought and started applying face makeup.

I didn’t have time to sleep more and I didn’t have time to be asked about it.

I knew I was spinning.

After reading the book Willpower by Roy Baumeister and John Tierney, I became convinced my issue was decision fatigue. My to-do list was a mile high! So in an act of desperation, I began writing down a couple things I would focus on each day on a blank 4×6 index card. “I will focus on…” helped me carve some “will dos” out of the endless “could dos” and “should dos.”

The practice began providing ballast to my days because it blew away the endless fog of “what should I do next?” and helped break giant projects down into simple tasks. A looming book deadline became “write 500 words,” an all-hands meeting about a major redesign became “send invite to three execs for feedback,” and my nonexistent exercise regime became “go for a 10-minute walk at lunch.”

I will focus on…

I started buying index cards in packs of 100 at the dollar store and felt a sense of pride whenever I finished another pack.

The practice was wonderful for reducing decision fatigue, but I was still much too focused on the negative throughout the rest of my life. Over the next few months, I came across research that convinced me it wasn’t my fault.

What do I mean?

It turns out our brains contain an almond-sized amygdala that secretes fight-or-flight hormones all day. A couple hundred thousand years of evolutionary programming makes us want to stare at bad news, sad news, and controversial news — endlessly. This naturally ingrained tendency is why we rubberneck on the highway, scan for the one-star review, and immediately find the one question we got wrong on the math test. Our amygdalas are fantastic at looking for problems, finding problems, and solving problems, but they’re also ripe for exploitation. News media and social media sites have perfected that perfect sour-sweet-sour combo that grabs the greatest amount of our attention possible. So I decided it wasn’t my fault I was negative — it was the world’s fault!

But I live in the world. So what did I do? A study comparing people who wrote down gratitudes to people who wrote down hassles or events taught me that if I write down things I’m grateful for every week over a 10-week period, I’ll not only be happier, but physically healthier.

Each day, I added this to the back of my index card:

I am grateful for…