Arnox, beside taking medication whether it be a stimulant or your SNRI option (better for comorbid anxiety) which is merely a tool to allow all that potential energy to become the kinetic motion needed for forward movement in your life, it is a worthy prospect to attempt to increase the all around quality of life by doing research experimentation and if you'd be so kind, documented observations for later review and collaboration.
Anything you can do to gain control of your life. A ketogenic diet like that which is used to treat epilepsy is seeming to help and shows promise enough to be gaining acceptance, while I am interested in a link potentially to ketones and insulin production, which crosses over what someone states earlier.
I personally am trying to get as much documentation together to support a link between ADHD like symptoms and metabolic disorder, similar to those (tenuous, as of yet) links which are being made at the moment with Alzeheimer's! Exciting stuff, when put like that.
Physical exercise is most definitely always a benefit. Get started now, everything's easier once you've got inertia playing to your side.
Edit: Something else not mentioned, for the sake of completion, is possibility of some symptom sufferers to suffer from something such as Delayed Sleep Phase Disorder though I can't give you more than a brief informed opinion about it.