If you believe you cannot fail, then you won't be emotionally prepared to deal with the inevitable setbacks. You have to recognize that there will be great difficulties, and you need to be able to adapt, regroup and re-energize. You must challenge yourself and be willing to take a clear-headed look at your plans, abilities and the strength of your competition so that you can respond. Great doubt is a part of a success, but it is not necessarily an indication of failure. I remind myself of that every time I find myself up at 3 a.m., sleepless, daunted by all the things we have to do to make our business a success.
Nothing succeeds without hard work.
I've seen hundreds of people with great ideas who have never made a dime. If you build a better mousetrap, the world will not beat a path to your door. Rather, your work has just begun. Then you have to figure out how to respond when a competitor brings in cheaper foreign imitations. The way to be an overnight success is to work at it for years.