By Danielle LongOriginal Source: goodmorningamerica.comTim Allen is 22 years sober, and he's doing his part to help others do the same.The actor, best known for his role as Tim "The Toolman" Taylor on "Home Improvement," appeared on Thursday's episode of "The Kelly Clarkson Show" and didn't hesitate to share his story of how he became drug- and alcohol-free...click here to continue reading