I can totally relate. Before I took an office job 20 years ago I used to bus tables and weld. Even though I make 10x what I earned back then I miss those days like you wouldn't believe. Something about welding in the heat and sweat your brains out but being able to put your hands on something you created at the end of the day was immensely rewarding. Hard physical labor is indeed therapeutic. I was never so happy in my life as I was then. I have a family now so my obligation is to provide for them so my mental health isn't important. But that's just life.