ADD is rubbish, just look at john demartini's work, somebody who they diagnosed with ADD. He basically says that you have ADD when you do things that dont align with your values but when you work with your values you have a "attention surplus order".
Harmonious Living - Demartini - Attention Surplus Order (ASO) - ADHD / ADD
But I feel you are very keen to have ADD, hes kinda your excuse for your failure