+1 on the health. At this point, you probably have a lot of time on your hands. Use some of that to learn how to be healthy. Exercise, food, cooking, etc.. are all deep rabbit holes to explore, so develop your baseline of knowledge and habits now so that you can fall back on them when life inevitably takes you away from them.
number two: don’t look at others, don’t try to impress, you have your own path and your own destiny
number three: take risks, later you won’t be able to
number four: live frugally, invest into S&P 500 index
most importantly: be nice to people, you’ll never regret being nice