2) Trust your inner viewer It's the best tool you have! If something doesn't make sense, or seems boring to you – it probably doesn't and Is. Give yourself full permission to voice concerns about something that isn't working for you – or if you're working alone, give yourself permission to change it.
Here is my number 2 "rule". The inner viewer is beginner mind - again and again and again. If you can't see your film fresh, watch it with someone else - that is the fastest way to see what needs changing.
Check out my editing workshops for directors!