always remember if someone out there does not like you or your actions, there are many more who will like you for you
You don't. Ignoring things is not the answer. You take the constructive criticism and consider it. The negative stuff is probably them letting off steam or their ignorance. You can either enlighten them or accept the fact that they just don't know better.
think of them the same way, I do, I dont care what people think of me :)
You will get all kinds of advice, in my profession I have been subjected to some of the most hurtful things and despite my shield of you cant hurt me it does, laugh it off and pay no intention. If you do they feed on it like cancer.
just realize what they think aint worth thinking about
imagine you standing in a huge concert hall with 10,000 people watching you. 10,000 different opinions of you. Whose opinion will you accept and whose opinion would you leave out?