I have no words of wisdom to give you.... someone else will no doubt. But I know EXACTLY how you feel.
I was making some blocks about a year ago and someone I know made rather disparaging comments about the colours I'd chosen. I was so gutted I put it aside and I still haven't gone back to it. I actually found them the other day and quickly pushed them back out of sight so I didn't have to remember.
I'm lucky with hubby though... he's colour blind, so any time he says he doesn't like the colours I've chosen I can brush it aside, what would he know! LOL
Maybe you should post pictures on here of what you've done so far. It may be that the colours are going to look great and people will say, or it may be that someone will suggest adding a little of something else and that will be the key to get you enthusiastic again.