Exercise for Building Willpower Use your nondominant hand for as many tasks as possible every day between the hours of 8:00 a.m. and 6:00 p.m. for four to eight weeks (the longer the better). Adjust these hours accordingly if your schedule requires (e.g., if you work the night shift or if you only wake up around noon). Include tasks such as brushing your teeth, opening doors, using a computer mouse or trackball,
