Regret

I'm not the kind of person that deals with regret.  I usually don't regret any decision I make.  I'm more the type that looks at life with a "shit happens" mentality and move on.  But for some reason, I've started to second guess myself recently.  I've started to regret things I've said and done.  No matter how hard I try, I can't get this shit off my mind.  I know I can't go back and change what happened but I can't seem to move forward.  This is really disturbing.  Gotta learn to deal with regret before it consumes me.