What choices have you taken that help you do more with a computer?

I've always pushed the envelope of my computer, but have stopped doing that lately since I have embraced minimalism and one-idea-at-a-time principle. I have beefy hardware that can run several virtual machines and have multiple Electron apps running in the background, but have stopped all that in favor of lean and simplistic environments.

I typically do this by compartmenting different computing activities into different buckets, so I can focus. So for example I boot into a hard-drive that is for casual surfing of the web with a few beers, and strictly for leisure. Another hard-drive for web development, and having the environment customized just for web development. Another hard-drive for trying out new software which typically degrades and breaks the system over time which is why it's specifically for trying out software (it doesn't affect my other systems).

I think the 2 things that had the most impact on my productivity are:

1. cutting back on how many tools and software I use as much as possible. I don't need super sophisticated GUI editors if I have a well configured vim, I don't need a graphical password manager, I don't need a graphical VPN client. This may sound 70s-retro-ish but I found I get more done by using simpler tools.

2. stopped playing computer games. I used to be an avid gamer, MMORPGs, MOBAs, RTS, I was in several guilds, and teams. At one point I realised the immense amount of time this eats up, and what I could do if I spent that time doing something, anything else.