The meaning of success differs from person to person,some persons want to be live 'happy' and some others want to be 'great','good','comfortable', etc.what ever it may be ,if a person reaches his desire is considered as success. Now coming to yours question. first of all we set our goal/aim according to our strength and interest.Lack of any of the two leads to failure, here our strength is also very important e.g, if a person's height is 5 feet and he is trying to become a basket ball player,is it possible?No way. so selecting our goal according to our interest and strength,hard work,dedication and commitment are key steps for success. wishing you good luck!