Fill your life with positive expectations. Demand the best. Anyone can learn the physical mechanics. Keep an active mind, and continue to grow intellectually. You either grow or regress.
Nothing stands still.
High self-esteem can only come from moral productivity and achievement. The source of lasting happiness can never come from outside yourself through consuming values - but only from within yourself by producing values. If your purpose of life is security, you will be a failure. Security is the lowest form of happiness. Life operates in reverse action to entropy.