“Fall in love with some activity, and do it! Nobody ever figures out what life is all about, and it doesn't matter. Explore the world. Nearly everything is really interesting if you go into it deeply enough. Work as hard and as much as you want to on the things you like to do the best. Don't think about what you want to be, but what you want to do. Keep up some kind of a minimum with other things so that society does…
For instance, I love painting and woodworking, but I suffer no illusions that I would do "well" in those fields, as even far more talented and experienced individuals that I know in those fields are struggling mightily and envy my hobbyist status.