If someone tells you it can't be done, smile and gracefully agree. then go work twice work as hard to prove them wrong twice as fast.
Expect more,get more. Expect failure. And get that too.
Of course it's hard, It's supposed to be hard.
If it's easy, everyone would do it.
Hard is what makes it GREAT.
The minute you chose what you really want to do, it's a different kind of life.