Whenever there's doubt in what we're doing we might start to question why we're doing it and if or why it might not work. A new project, an old project, a relationship, a whim or a passion perhaps, there might be some doubt about it along the way.
But the answer to the success of any of these things is almost always the same.
Hard work. There's absolutely no substitute for it. Talent and luck will most likely not be a valid excuse for the failure of something by saying to yourself that you don't have them. And that's because hard work trounces both of them and is the most consistent path to success among anyone you respect or admire.
I know that's true for me and every time I've failed at something it's because I wasn't working hard enough.
Try it on for size, it can be very rewarding.