[colanderman]

I'd probably feel very bad if I spent money on short-term enjoyment because that money would be gone forever

You can't buy happiness, but you can buy happy memories, and those memories can last forever.

Trips, classes, concerts… all sincere ways to turn money into memories.

(BTW, I'm in much the same boat as you. Already changed jobs once looking to find new meaning. Hasn't worked yet.)