From R. Kelly's song:

If I can see it, then I can do it
If I just believe it, there's nothing to it

[1] - I believe I can fly
I believe I can touch the sky
I think about it every night and day
Spread my wings and fly away
I believe I can soar
I see me running through that open door
I believe I can fly
I believe I can fly
I believe I can fly

Believe it, Hun! You can do it!