fiatjeepdriver, do you run these businesses single-o or do you have employees? If you have employees, enlist them in the fight. Instruct them in how much you are allowed to indulge in, and they are to stop you having any more. Print up the instructions, along with your guarantee there will be no retribution (so long as they don't break your fingers), and maybe a (tax-free) cash bonus if they are successful, have it notarized and give them a copy.
And if you gain
more weight, fire the lot of 'em.
Remember the code of the drug pusher: "Don't get high on your own supply"