We are constantly talking with users but it's hard to filter their feedback. I guess you experienced this situation before you found product/market fit. How did you filter your user's comments? Based on your mission?
The way to filter feedback is based on your target demographic. Identify exactly who are the super users of your product (hopefully they're a small part of a very large segment of our population) and then listen to only them for the feedback.
Other tips: (1) Make sure to get their feedback in multiple ways, we still do surveys every week, phone calls, and home visits. On a survey, someone might say they shop at Whole Foods. At home, you'll see all the Costco stuff in their pantry ;) (2) Set benchmarks for when feedback becomes meaningful. When over 5% of our community says something, we start prioritizing it. When less than 10% of our community uses a new feature or offering on our website, we consider letting it go.
To get to product/market fit, meeting the customers is everything. They will help you both better describe who is your exact target market (the professional mom who says she shops at Whole Foods but still likes deals from Costco) and help you refine your product for that market.