Somewhat Invisible

I was born with it, you see. 

Invisibility, but I have no control over it.

It comes and goes.

I'm never completely invisible, only somewhat invisible.

Sometimes, I am seen when I want to be seen.

And only seen by those who wish to see me. 

All others, they do not see me, nor do they wish or choose to see me.

I am somewhat invisible. 

I am there, but not really there.

I am somewhat invisible.