i know this is prob the toughest thing to do, but I am all about the spirit of competition. posting current pics, then pics at the end of X amount of time then voting on the most improved ect.
Not only is it a good way to get people involved, but also it motivates the shit out of me.
I don't do this for my family, my friends, women, accolades, pride, or ego. I do it for me and no one else, its just part of who I am.