Figure out what patterns were in your marriages. What was it that didn't work, why were you drawn to them to begin with. Most think it's a pretty mysterious thing, it isn't, open your eyes. Then don't repeat it with the next swingin dick that comes along. It isn't the men that screw it up, it's our choices. It works the other way, but I don't go into hate mode because of my choices either. It's called taking responsibility for yourself.
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Just enjoy what you do, as best you can, and let the dog out once in a while.