I don't think that you have decide what you want to do with your life at 18 or even 38, you just have to keep on trying and try to have joy in your life. You do spend a lot of hours on your work, so it needs to have enjoyment for you. What you do in college is not nearly as important as just graduating and then figuring out what you want to do.
It is about, I think caring about yourself and working towards self awareness.
Dr. Jennifer Baxt