identify a larger cause that you want to contribute to and make your contribution.
for example, a political cause, lgbt rights, child labor, pollution, animal rights, being successful at work.
but yeah i have felt pretty aimless for a long time. and i am 34. from 3rd to 7th grade, my precious lil "parents" made me memorize 10-20 SAT words per day, in the summer. and 10-20 SAT words per week, in the school year, from 3rd to 7th grade. then take the SAT in 7th grade. good grief.
all so that i could go to ucsd. flunk structural engineering 4th year.
but hey. "life" goes on. at least, "life" goes on, as much as it otherwise would have gone on, with structural engineering.
especially for people that are different, such as autistics, it's kind of hard to find your niche. or even find a single friend. and it has been. even though the city i live in is plenty diverse and politically liberal. and et cetera. but if and when you find some friends, they might make you feel less aimless.
but quite frankly, though. eventually everything living will die. and humans will go extinct. all those successes won't matter, sooner or later.
when my precious lil "mom" died 2 years ago, my precious lil "dad" and sister were sad. but, sooner or later everyone is going to die. so what?