Any action is often better than no action, especially if you have been stuck in an unhappy situation for a long time. If it is a mistake, at least you learn something, in which case it's no longer a mistake. If you remain stuck, you learn nothing. Is fear preventing you from taking action? Acknowledge the fear, watch it, take your attention into it, be fully present with it. Doing so cuts the link between the fear and your thinking. Don't let the fear rise up into your mind. Use the power of the Now. Fear cannot prevail against it.