I also wanted to add it is very easy to throw yourself into *something* just for the sake of doing it. IMO the very crucial element of turning your (again, general you) is to find some meaningful and real personal fulfillment. Anybody can say they are doing new things and yes, after being left in a marriage it's hard to even focus/function, eventually though we have to stop "faking it" and really start searching for something that is real. That *something* is different for everybody but I am certain that it can exist for everybody.
Life is very fragile and very short. The difference between life and death is one breath. Often times we have to do a tremendous amount of searching to find our individual *something* that will bring us personal fulfillment. Otherwise how do we begin to overcome the self hatred? If there is some magic formula I am not aware of I would LOVE to know it! There comes a time when we have to stop drifting through "things" and begin searching. It could be something small or a major life change but stepping on the path is essential.
Nobody said this was easy. It's tough. For most of us it will be one of the top 3 most difficult experiences of our life.