I am required to maintain a commercial drivers license at all times for emergency purposes.
I pick and choose my cocaine usage.
Adderal. Tell your doctor that you're having trouble focusing, and that your mind wanders a bit. Tell him it is impacting your work, and you are letting your tasks slide and having trouble meeting deadlines. Then mention a friend in a similar situation was diagnosed with Adult ADHD and his symptoms were the same as yours.
Voila, you're walking out with a legal script for Amphetamine Salts.