If you could start over

I would probably heavily invest into cryptocurrency. That would be the easiest way imo

I would sell first my old toys and then I trade thinks like books first and then mobiles, cars or other things

never put all your eggs in one basket. its easy to be blinded by potential number.

go back to school, get better grades, not get with my bitch of an ex that runied my life, stop doing drugs.

I'd recommend anyone to keep the goals low, better go step by step instead of setting a huge goal and then getting demotivated by not reaching it.
It takes time and effort to become successful and it hard, but never give up.