Building for yourself. Is it enough?

Hey guys!

My biggest weakness (that I'm working on strengthening) is reaching out to people to discuss pinpoints and validate ideas.

I usually just start building something, before I do extensive research on validating the idea.

My question is, if the idea solves a pain point that you are having, is that enough justification to pursue that idea?

I've realized that people aren't as unique as they would like to think they are, and most often than not, the pain points you have are usually faced by many others.