Don't Let The Perfect Be The Enemy Of The Good
There are too many times we don't like to move forward because we don't have all of the information, haven't covered all of the scenarios, or feel like we don't have all of the experience we need. We don't apply for our dream job because we feel like we don't have the experience needed or are simply afraid of being told we aren't right for the position. We don't want to start writing because we feel like there are lots of other writers that are much better than us. The part we never see is the countless hours of practice and bad writing that happened to become better, to be the writer we see today.
Everyone starts out as a novice, a beginner. You can still make music even if you aren't Mozart. You can still write even if you aren't Shakespeare. You can still dance even if you aren't Misty Copeland. You can still manage even if you aren't Peter Drucker. You can still coach even if you aren't Vince Lombardi.
Usually the only person standing in your way, telling you that you can't, is you.