Most Helpful Guy
Being realistic means you understand your limitations and what you can achieve - but you still go out and do your best and make the most out of a given situation. lowering your expectations to avoid disappointment is not necessarily the same thing - yes sometimes to be real you need to lower your expectations, but other times being real means you understand you are capable of achieving great things and not selling yourself short. A pessimistic person is someone who underestimates him/herself on a consistent basis. Therefore, if you are inappropriately lowering your expectations, you are being pessimistic.