I think it would help you to remember that no artist of any medium who is selling their work and making a career out of it gets to where they are without heaps of criticism. Go check out any even low-key creator/musician on youtube, or a director who just got his first movie nominated for some award, or an artist who got a piece in a galary.. They will all have some people somewhere saying something bad about the work/the artist. don't be afraid of that. It means youve made it far enough for people to give you the time of day.

I think the key to pushing on in these situations is to know what your making is the honest extension of you, and to be your own fan. Please just try to be your own fan of your work. If someone talked smack about my favorite band I could care less, because I love them, and that persons opinion doesn't change that I love them. So love yourself, and be a fan of yourself, and you wont turn away from yourself if someone says something bad, just like you wouldnt turn from you favorite band just because others dont like them.