Best known as the loveable Arnold Jackson on the hit series “Diff’rent Strokes” (1978-86), child star Gary Coleman has struggled to redefine his life and career ever since he played the gregarious TV moppet. As with costars Todd Bridges and Dana Plato, Coleman descended into a life of career mediocrity and seemingly non-stop trouble once the show was canceled. Though he never succumbed to drugs like Bridges and Plato, Coleman nonetheless suffered the aftereffects of being a former child celebrity, even twice attempting suicide. But through it all, Coleman managed to pull himself up by the