So, on the medication side, there are NRIs (norepinephrine reuptake inhibitor) and alpha-2A agonists. The latter in particular work kind of the opposite of stimulants. A psychiatrists described the difference to me with the metaphor of a sound system where you're having trouble listening to the music. The stimulants are amplifiers that push up the volume. The other approach is a better preamp that does a better job reducing the noise. Depending on the nature of your problem, one is going to help a lot, and the other is going to be useless at best, but could well make the problem worse.
I presume you're aware of the other non-pharmaceutical interventions, like CBT. Generally they don't have as high a success rate, but that doesn't mean that they aren't be the right solution for you.