I think it depends on what you're looking for. I started Ritalin recently just being diagnosed at 28, and I will say it's made things soo much easier. They're not really a treatment "for ADHD" but they do help me focus and calm me down. I do have trouble with sitting with boredom, impatience, and time management/time blindness still though. I'm not exactly sure which traits your referring to, but some symptoms are pretty easily treated although I feel like certain "traits" could be behaviors that we learn to deal with the symptoms that might be more engrained.