Try going for a walk or getting some excersize in. Go for a good loose your breath cardio if you are healthy enough. This will cause your brain to produce dopamine and is one of the best treatments studied for ADHD and depression. How long have you been on the strattera? You should give it two months but strattera did exactly this too me. How many different types of stimulants did you try because if only on kind didn't work you may be able to find a different kind that does. There are also antidepressants that help with ADHD like Wellbutrin and maybe that would be a better fit.

I'm a bit too hyperactive to feel that way unmedicated but since I'm combined presentation I feel like some medications only help with the hyperactive subset of my symptoms leaving me unattentive and uninterested in most things. Discuss changing your medications with whoever writes your prescriptions.