Vim is actually highly ergonomic; you can do everything with a minimum of keystrokes without moving a hand away to a mouse or touchpad or oven the arrow keys. If that’s worth the time investment to learn it, is a highly subjective question. But I’d say it’s a lot easier than many people think.

One game that might fit the bill or at least serve as a good base for a homebrew is East Texas University. It’s heavily inspired by BtVS and uses the generic Savage Worlds system, which should make it easy to adapt, possibly making use of the Horror, Fantasy, and Super Powers Companions. I haven’t played ETU yet but Savage Worlds as a system delivers pulp action with a good bit of crunch, especially for fights — somewhere in the middle between GURPS and Fate, I’d say.

You do realize that you don’t have to read a documentation from beginning to end, don’t you? But for that specific feature you need and don’t know how to use—RTFM!

What helps short term for me are workouts, mostly strength training, and playing board and role-playing games with friends (often online), a nice combination of socializing and concentrating on something. On bad days I’m ignoring the news even though I like to keep informed. For long term improvement I’m looking at getting more into Buddhism, which has shown some promising early results. It’s all about alleviating personal suffering, basically a system of therapy so effective, people made a religion out of it. (The religious trappings can easily be ignored and usually are outside of Asia.)