You have a couple things going on here. First, Concerta is an extended release form of Ritalin. Focalin is also another form of Ritalin (in laymen’s terms it is a more purified form of the active ingredient). The bottom line is Ritalin does not seem to be the right drug for you. I tried Focalin and after 3 days I was so damn depressed I struggled to make it through the day. After I washed it out, I felt better and switched to Adderall.
You have some choices for medication. Ask your doctor to try other medications that are not methylphenidate (Ritalin) based. Try Adderall, Vyvanse (a form of Adderall), and Strattera. Everyone is a little bit different and there is some trial and error involved. If your doctor treats everyone the same way, then you need a new doctor.
ADHD often comes with heightened anxiety and related symptoms. Something to help ease that too may be helpful if you need it and can tolerate it. Once again there are a lot of choices out there and it will be a little trial and error. Sometimes a low dose of clonidine (not clonipin) is helpful for sleeping.
Lastly, there are few things you can do in your diet that can be helpful (I put some of this in another post). Lay off white sugar (candy and sugary foods), and avoid corn syrup as much as possible. Take a good fish oil supplement and follow some of the ADHD diet suggestions on this website. I have had good luck with the Zone Diet and Plant Paradox diet. The ADHD brain is a high performance machine and requires premium fuel!