We are bitter about our career and feel that others with lesser abilities are doing better than this, about relationships as we feel we deserve a better person, about looks, physique, money, clothes even holidays. Whenever we see happy people the bitterness comes out and we try to find out why the other person is happy while we are not. Normally what we conclude has got nothing to do with what the other person is happy about (assuming he / she is) but what we lack.