I've made conscious effort to "fast" from these issues. I tell myself and those close to me who might ask that I'm just going to take a 12 hour, or 7 day, or whatever time necessary period away from the topic...my lips will be sealed! And without fail, as soon as I do that, my mind begins to spin with thoughts and feelings and ideas! Suddenly it is the only thing I can think about.
Any advice on how to move on from a topic when you've exhausted yourself over it and deep down you know there's no undiscovered solution lurking around the corner?