Laila

Obviously, you have  high expectations in people that doesn't usually come around.  The way  you deal with the outcome is leading  us to believe that you might need some professional help.  Talk to your family doctor about your anger issue, mood swings and feeling sad.  Ask him about "Attention Deficit Disorder", where he can go through a questionnaire with you and find out if this is the case with you, which is treatable with medications.  We are not physicians, however it wouldn't hurt to check it out.  

We wish you all the best