I just came across this quote by George Bernard Shaw, and it's simplicity impressed me.
"People are always blaming their circumstances for what they are. I don't believe in circumstances. The people who get on in this world are the people who get up and look for the circumstances they want, and if they can't find them, make them."
I guess he's really saying what we already know - that if you want to make a success of your business, then you have to be prepared to put in some time. It won't happen overnight, it won't be handed to you on a plate and the only reason your business won't succeed is if you don't make it.