I'm not sure what the benefit of having higher self-esteem or a positive attitude is anyway
It has been stated that there is evidence that children's self-esteem can be enhanced by teachers encouragement of self-rewarding behavior on the part of their students. With increasing self-esteem comes improvement in academic performance which, in turn, enhances self-esteem. Further, above-average levels of self-esteem are associated positively with better adjustment, more independence, less defensive and deviant behavior, and greater social effectiveness and acceptance of others. (Gurney, 1987)
Nathaniel Branden (1986) states,
"I cannot think of a single psychological problem - from anxiety and depression, to fear of intimacy or of success, to alcohol or drug abuse, to spousal battering or child molestation, to suicide and crimes of violence--that is not traceable to the problem of a poor self-concept. Positive self-esteem is a cardinal requirement of a fulfilling life. There is overwhelming evidence, including scientific research findings, that the higher the level of an individual s self-esteem, the more likely that he or she will treat others with respect, kindness and generosity."
Keegan(1987) has stated that low self-esteem either causes or contributes to neurosis, anxiety, defensiveness, drug abuse, alcoholism, depression, adolescent interpersonal problems as well as low academic achievement.
Steffenhagen & Burns, (1987) have gone so far as to state,
"We believe that low self-esteem is the psychological mechanism underlying all deviant behavior."
Numerous social science studies have documented a link between low self-esteem and such social ills as juvenile delinquency, violent crime, drug and alcohol abuse, teen pregnancy, child and spousal abuse, chronic welfare dependency, and school failure. (Gurney, 1987)