Your computer should be waiting for you, not you waiting for your computer. Any single job you're doing more than once, look at how you can do it easier.

Look at emmet if you do anything involving html.

Maybe setup a process that watches a folder and builds/compiles anything placed in there.

If you need to do a job 10 times that takes 5 hours to do each time and you can automate that job in 30 hours so each job now only takes 1 hour each then you've saved 10 hours of time.

At my work I've made an enewsletter editor app (turned 2 week job down to 3 days job) and a language file editor for the content we output (turned 1 week job into 1 day job)

All that extra time gives you more breathing room between projects, more polish time for those projects or more time to learn new things.

I use it primarily as a windows manager and an easy way to start and stop Spotify/iTunes.

This (https://github.com/Linell/hammerspoon-config) is my configuration, which is about as basic as it gets. The documentation has a billion other, cooler things that can be done.