Yeah it's odd when you look back at your own work. Some filmmakers don't look back at their work at all. I look at my work a lot actually. I feel like I learned something while looking at stuff I've done in terms of what I'm going to do in the future mistakes I've made and things at work or what have you.
Famous pivot stories are often failures but you don't need to fail before you pivot. All a pivot is is a change is strategy without a change in vision. Whenever entrepreneurs see a new way to achieve their vision - a way to be more successful - they have to remain nimble enough to take it.