I remember my mom telling me, years ago when I was in high school, you won't find yourself till your late twenties, maybe even your early thirties. Though I consider my mom to be one of the wisest people this earth has ever been graced with (yeah, I'm biased, so what) I think she's incorrect.
We spend our lives learning, growing, and going through a myriad of experiences that shape us. Those experiences don't just happen during one period of time in our lives, they happen all throughout. I know these years I'm in now will shape a huge part of who I am but that's not to say I won't continue to change and be formed by what I go through. And neither will you. Huge life events will happen, regardless of whether you're in your twenties and thirties or not.
I think the root of people saying "these are the years that shape you" is because it's, typically, in this decade (give or take) in which you find your career, get married, have a family, etc. So I understand the foundation for this sentiment. But emotionally, there's so much going on, that I feel it takes time for your thoughts, throughout all these milestones, to truly settle and make sense.
I am 25 and I could not be more lost, but I am beyond excited to have many memories and learn along the way. I hope everyone can find a little bit of excitement in the unknown, because such is life.