You do not have to know everything there is to know about a subject or a skill in order to be successful in using it. More often than not, all you need is an unquenchable enthusiasm and belief in what you are doing. It is that "ready, fire, aim" mentality that wins out almost all of the time over the "ready, aim, fire" mentality. Be willing to take "massive imperfect action" and you will find yourself overtaken by success more so than if you wait until everything is perfect before you begin.