I probably would have been better off maintaining Vyvanse into adulthood, but I quit taking it as soon as I had the ability to make the decision to. I felt dull, emotionless, my appetite sucked. Yes, ADD sucks and it has caused issues in my personal life, but I am who I am and I accept those parts of myself. Would my grades have been better in college? Would I have been better at maintaining social events? Sure. But sometimes you just have to build good habits to overcome whatever you can.