It’s not one thing for all points in time. What we want changes, as @rooeytoo says, constantly. You are a new person from year to year, month to month, day to day. Each new person wants something different.
You ask this question as if there is one right answer for you, and if you have that answer, you’ll know exactly what to do. It’s just not like that. You have dreams and you have goals. Sometimes one goal seems more important, and at other times it’s not even on your radar screen.
I never even really had goals for my life. Except impossible ones like saving the world. Mostly it’s been pursuing what I think I want right now in order to either satisfy an insistent itch, or to make me happy at some point in the future. What do I want in life? I want to do good. I want to help people. I want to play trumpet. I want to be loved. I want to be an involved and loving father. I want to treat people well, and respectfully. I want to try to understand and empathize with everyone (that’s a toughy, for sure).
I don’t know if these are goals so much as principles. I guess it’s not so much what I want in life, but how I live my life. If I live my life in a way that I feel good about, then it won’t matter what I accomplish. That will be accomplishment enough.
Unfortunately, I also have another principle lurking in the background. I feel compelled to try to be perfect. I also feel like I have not done my job until there is noone who does not have reason to be thankful to me. These two principles pretty much mess me up a lot. I don’t think they are realistic, nor at they desirable. They put too much pressure on me. No one could achieve them. But, in some ways, I’m not in control of what I want in life.