What does it mean to be 28?

When I was young, I believe I was 16 at that time.
There's this one lady, a beautiful one, she carry herself well.
She's a sister of my childhood friend, that moment I told myself I wanna be like her, "successful".
I asked for her age, they told me she's 28.
I went home, looked in the mirror and told myself that I'll be successful at the same age.
The memory is still vivid.

I am 28 years old now, and doing well, but that memory keeps on haunting me.
Well, I guess this is what you called mid-life crisis.

I recently resigned on my current job and it was based on impulse decision.
I've been with the company for four years.
Four years? Aha!, indeed!
It was my comfort zone but there's this voice in my head that is predominantly unhappy one.
I need internal growth, as much as material outer success.

And now, its like I am standing in a precipice, but I know, deep down I have made the right decision