ever since i was 13 i have had probelms with picking my face.Now not only my face but my back,chest and head.My family and friends would always compliment me on how nice i look.But when i look nice and everything is fine,I start to pick at myself.Picking at small or hardly noticeable problems.I am now 20 and it has gotten worse.I dont know what to do.I feel hopless,lost and alone.