Having unrealistic expectations is believed to be poison for our relationship, career, happiness and life in general. Expecting too much from someone or yourself is the reason that a lot of us are unhappy. Thinking you are at a less deserving job? Thinking your partner isn’t doing enough for you? Thinking that your friends don’t call you enough? All these thoughts make you unhappy because we as humans always expect outcomes and when those expectations aren’t fulfilled we become upset.