Weak willpower & procrastination caused by dopamine hypofunction is one of those neurological deficiencies which effort alone can't overcome. Happily, in our transhuman paradise, even the most lethargic spirit can move mountains.
Accounts of use for depression, ADD/ADHD, fibromyalgia, chronic fatigue (off-label). Metabolic precursor to modafinil; takes 1 hr to kick in, hard on liver. Not "controlled" like modafinil/Provigil.