Some people just don't have an off button. How do you help these people? Make sure they don't do drugs in the first place. Legalisation, while a civil libertarians dream, will simply expose more people who shouldn't do drugs period. It might sound harsh, but not all people are created equal, and if you can't get your drug taking and work balance together now with all of societies hang brakes against drug use, what makes you think these same people would be better off with unfettered access to pure products?