What makes me, me

I saw the world a couple of times, tried to cure the ache with absence
But that hole was still a hole and my mind kept playin' tricks on me
Feelin' older every day, took everything I had to not crash and burn
But I'm starting to learn
Sometimes I'll fall down, sometimes I'll lose hope
But those days will be few if I keep my feet on the ground
I might be lonely, but I ain't alone here
So I keep pushin' the limits of what makes me me