I'm not sure who need to hear this but... Ignore them and keep on building!

Do you know the hallmark of a second rater? It's resentment of another man's achievement. Those touchy mediocrities who sit trembling lest someone's work prove greater than their own - they have no inkling of the loneliness that comes when you reach the top. The loneliness for an equal - for a mind to respect and an achievement to admire. They bare their teeth at you from out of their rat holes,thinking that you take pleasure in letting your brilliance dim them - while you'd give a year of my life to see a flicker of talent anywhere among them.

Ayn Rand, Atlas Shrugged

Ignore them and keep on building!