Hey, @tarazkp.
I'm probably not the best to advise or to provide definitive answers about milestones given what my life is like right now, but there was a point, about 10 years ago, where I was achieving beyond any milestones I might have placed.
It's all kind of crumbled and crashed part way down the mountain since then.
However, enough was done in that earlier part that life goes on and hope continues and at some point the climb will continue.
I'm in agreement with the idea that milestones will change with time, as the maturation process, such as it is, takes place. Life experiences tend to helps us determine quite a bit of what we truly want and don't want, while still leaving enough ambiguity to give us a chance to chase after some things that may or may not matter.
I think I'm a few years down the road from you, and so far, there really hasn't been that aha moment. The body has certainly gone down hill but the mind still wants to do what it wanted to do for the last 45 years at least—create something. Anything. Then, make money.
So, I'm sure I'll keep trying that, while I try to do something else to help support life in the real world. :)
RE: Hitting and missing life milestones