Realize you cannot control other people.  They are going to do the crazy, stupid, incorrect things they are going to do.  You can’t force them to do anything else.  You can’t force someone to stop being lazy or lying to you or cheating on you.  The only person you can control is you.  You get to decide how much you’re going to let this person’s behavior impact you.  Your worrying, obsessing, venting, etc. has zero impact on them – and only hurts you. Source: Fire Star