I hear you, man. I think your art is fantastic. The curation you have received should encourage the fact that your art is good. You have won before as well.
Not winning a contest can be a motivating force to keep on keeping on... or you can choose to be discouraged by it and do what you will based on that negativity.
It's healthy to look at the big picture overall and stay optimistic. Anyone can help encourage and/or constructively criticize or express concerns but it's often the way we go about it that can turn things sour.