[hutch120]

My 2 cents... generally a product is something that has value to others... so, think about that first. Why is your product valuable to others? Explain your product to at least one person who is not invested in the process that would buy your product if it existed. Ask them lots of questions about why they would buy your product. Would their friends buy your product? Why? Can you pre-sell your product before you even start building it? You get the idea... sell first, build after. Sell a little, build a little, repeat.

[600frogs]

I've never fully committed and built a solo product, so take what I say with a large pinch of salt, but from what I understand asking your friends "would you buy this" is supposedly a notoriously poor metric for market fit. Their answer is always going to be "of course!" because it's easy and it seems supportive, but the difference between "would I spend this hypothetical money on this hypothetical product" Vs spending real money is huge.