I'm so happy for you! I remember that time of needing other people's opinions - ick - but also the joy that came with trusting myself and believing in myself :) It's a good place to be. But also, for me, it is important that I surround myself with those who are interested in my success - that way not only do I get support from them but I am also able to support them on their journey.
I like what you said about taking their perspective. I think that is a good idea with any naysayer who offers a perspective that is deeper than "don't do it because it is stupid!" Someone once said that You are entitled to an opinion but if its not based on anything then it won't be given the same attention as those who do have fact-based opinions. (or something like that)