Don't be afraid to dream of achieving the impossible.
I am not the best, but I am capable of achieving the impossible.
The difficult is what takes a little time; the impossible is what takes a little longer.
Nothing is impossible. Some things are just less likely than others.
Don't waste even a minute magnifying your perceived inadequacies. You can't do it all. Why berate yourself for not achieving the impossible?
By striving to do the impossible, man has always achieved what is possible.