I have the best of ill intentions but how many times will i have to learn the same lesson?

Seriously I think it's the many head injuries I've had I seem to miss the relationships I should be having I'm always/usually given another chance I want to but just can't. it's very frustrating I don't even really know what would have been the right thing to do until an hour later and the next time the opportunity comes the situation is just different enough that I still miss it.
Someone either kill me or actually talk to me instead of this talk about me as I walk by b.s. Wtf why!