I read Cal Newport's Deep Work (https://www.amazon.com/Deep-Work-Focused-Success-Distracted/...), which explains how to work in a way that maximizes your output. In short, he recommends spending short periods of time hyper-focused on difficult problems with absolutely no distractions.

I applied this way of working to how I approached studying for software engineering and it helped me tremendously. I was able to pick up difficult solutions quite quickly without spending huge amounts of time studying. I've continued to use this way of working over the last couple of years, which has helped me perform well at work + on side projects.

During this time, I had no way to track my deep work hours or what I was getting done in those sessions. This allows you to do just that. You can think of it like Google Analytics for your Deep Work time.

It's in the early stages now, but I'm in the process of adding essential features.