Have you ever felt you moved on too early?
Context: I'm currently validating new project ideas and have just realised that a previous project of mine could've been commercially successful had I kept pursing it. What advice would you give? Keep iterating on new ideas or revisit the old ones?
It's impossible to give advice to others on this without knowing almost as much about the problem space as you do. One can find plenty of stories of someone pursuing a project until they were bankrupt and it never worked out. It's more difficult to find as many stories like yours primarily because they aren't as gut-wrenching. But they are out there. I wish I, or anyone, could help with this but unless you have someone intimately familiar with your situation, I don't think we could.