You might think that you are set and that everything that you have planned is the best way forward. However, more often than not, getting a fresh perspective on things might be a great thing. The person might raise things that you hadn’t considered, regardless how thorough you have been. That shouldn’t be taken as a bruise to your ego, rather it should be considered as a positive thing. When you have taken in different fresh perspectives, you could then assess your plan and see if any iterations ought to be made. If yes, go ahead. And if not, that is fine. Know that ultimately, you decide what to do with the new inputs that arises. If you are wary of even putting your plan up for feedback, then that it could possibly already be a warning sign.