You're very unlimited, you're unstoppable

I look around smiling

i'm unshakened, unshakable

you wonder why...but that's because i'm unstopaable

You stop to glance around, you don' let up.

 move forward, don't let up

I take it Nonchanlantely not letting up.

not giving up

You know you want to to blend in, but you've had enough

not letting up

so unlimited.