The first scene and character that came to me on my WIP that won't end became my prologue. It is fifteen pages long. Not a lot happens, it's mostly inner thoughts from our hero who is watching our heroine. My prologue may classify as a cliché of what not to do in your opening chapter.
The worst part is that I am a hypocrite. I edit books for an e-publishing company, and I tell my authors ALL THE TIME to jump right into the action. Cut back on opening narration. And these are just little tweaks here and there. No one has ever sent me FIFTEEN PAGES of prologue that mostly are a story set up. If so, I would have jumped right into the editing letter with sage advice about reader interest, page turn-ability, etc.
So now I am taking my own advice.
Now I'm happy and calm about this decision to change the prologue into a "real" chapter and redo my beginning. It just took: getting truth-slapped by a post and reader comments about prologues, being sent contest scores back in which two judges both said I'm starting my story in the wrong place, a crit partner agreeing and explaining it well / encouraging me to try something new AND reading the Writer's Journey in which there is sound reasoning for jumping right into the action and "call" of the hero. Then I just needed to have a minor panic attack (followed by a major bender) and move my prologue.
That's all it took for me to take my own advice. Reasonable.