The clearer the rules and the limits enforced by parents, the higher the child's self-esteem. The more freedom the child had, the lower his self-esteem.
Self-esteem cannot be directly injected. It needs to result from doing well, from being warranted.
Once a depressed person becomes active and hopeful, self-esteem always improves. Bolstering self-esteem without changing hopelessness, without changing passivity, accomplishes nothing.