Fail
90% of what you is going to fail. Not some, not all but most. When you accept the fact, you can focus on making the best product you can. If that doesn’t work out, at least you have gained the wisdom of your experiences to work on the next project. Your wisdom builds through the next project, to the next project and so forth. You even notice that your projects will come about much faster when you enforce it. So in the end its not really failure, its only failure when you stop trying.