How do you decide what to build next?

One thing I keep struggling with while building products is figuring out which features are actually worth spending time on.

I sometimes come up with ideas that sound great, but then I wonder whether anyone would really use them. I also don't want to spend days building something that people don't actually need.

I'm trying to get better at understanding user needs before jumping straight into coding.

For those who've built and launched products, how do you usually decide what to work on next? Do you talk to users, look at feedback, or just build your ideas and see what happens?

I'd love to hear what has worked for you.