Bill Sourour has some good tips on how to manage your time.

There’s no time for anything. At least that’s how it feels doesn’t it? No time to learn all the things you think you need to learn to stay ahead of the curve. No time to go back and refactor that ugly piece of code. It works (sort of) and there’s a deadline approaching. No time to write unit tests for everything. No time to write documentation or comments for the next guy who gets stuck maintaining what you wrote. No time to think. No time to breathe. No time! Well… if you take the time to read this article, I promise you’ll find yourself with more time for what’s important.

https://medium.freecodecamp.com/finding-time-to-become-a-better-developer-eebc154881b2