Negative feedback is good for you.
While it’s very human to only want to hear how wonderful your solution is, you need to learn about any objections to your product NOW. Not later, when you have to deal with an entire slipped pipeline, because you didn’t realize there was a deal-breaker.
You need honest feedback, and you need it now.
But how do you ensure feedback that is real? Very few people, no matter how stupid they think your idea is, will actually tell you that. You have to create an environment that allows people to tell you about the downside.
One of the more painful exercises you can go through is to put a group of people together in a focus group and ask “what DON’T you like about this solution?” Once you ask them this question, and give them permission to be brutally honest, they WILL tell you about everything they don’t like. And the list of things they don’t like will be very long. And their list will inspire the other participants to think about even more things that they don’t like.
But as I said, this is GOOD FOR YOU! If you know about the objections, you can prepare for them in advance. In the long run, this will save you significant amounts of time and money.