A really important piece of advice - take care of your health, both physical and mental. If you're able to access decent food then eat healthily, do reasonable exercise. Fruit and veg is also good for mental health: https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2018.00487/full
As you get older any poor health decisions you made in your youth will come back to bite you.
