I seem to be having serious problems staying focused on achieving different tasks at work and with energy. My doctor recommended Ritalin when speaking to me over the phone . I always thought this was given to kids with ADD , not adults that one of my doctors thought would be a bad idea for an adult over 21 . Some of the people I work with said I should try to convince my doctor I'm incompetent to collect disability . I can't imagine this is an easy task and not something I want for myself , but can anyone suggest how to go about doing this since this doctor who is my Psychiatrist for years now knows me well enough .