I hear you - hind sight being 20/20 ...
If I had my life to do over, with what I know now, I would spend LOT more time living and a LOT less time working.
Get a good trade - electrician one example - you can work all over the world.
Have at it until I got about 70K in the bank. Quit, ask myself "What should I do ? Let's learn to surf !!! "
Go do that until the bank balance gets low.
Repeat.
Don't buy no house, no fancy car, just LIVE.
Sure would have some memories - altho' I did all right as it turned out, just worked TOO much.
Got married, got greedy, wasted a lot of time and money on that <deleted>