At any point in our lives when we are making progress, there will always be someone who doesn't want to see us proceed and accomplish success. When we are dealing with "haters" and naysayers it is best that we don't waste any energy stressing or getting mad over there opinions, because no matter what we do somebody will always have something negative to say about it.
The only time that we should truly worry is when we don't hear anyone talking about us at all, this means that you don't have anything going on for people to try and be cynical about. Never run away from what you are doing because someone says that you can't do it, or that you shouldn't be doing it. You know in your heart what is right for you to be doing, so make sure you follow it. Never let anything or anybody stand in the way of you accomplishing your dreams!