How Do You Stop Overthinking And Trust The Creative Process?

Bob Baker of The Creative Entrepreneur Podcast and myself have solicited questions from the arts community at large related to the performing arts, writers, designers, musicians, et al. and will use our own experience to give our take, opinions, and stories to answer those questions. 

Below is the first episode in which someone submitted  the question; "How do you stop overthinking and trust the creative process?"  How long should you think about a project before you start and when should you stop thinking and just do it? Is art the process or the product? And what can we learn from Edgar Degas? What did Mario Puzo know about Screenwriting? How does this tie into our answer?