Allowing a false sense of idealism to blind you to potential pitfalls can cause trouble down the road. Instead of spinning endless success fantasies in your head, seek the counsel of those who have gone before you. Heeding these wise words can save you effort, energy and money. At the same time, don't let a sourpuss dissuade you from a plan you know in your heart can pay off. Keep looking until you find someone who has made it work.