A colleague recently asked me if I had any product ideas that we could work on together. I took the opportunity to bring up a problem I'd encountered a few months previously which I kept thinking could be solved rather easily with a product that provides real value.
He (@overture8) loved the idea and we decided to work on it together and deliver an MVP we could test as quickly as possible. Finding someone motivated to work with you is a great way to push yourself to finally make your idea a reality!