5. Affirm your real worth
The following exercise has been demonstrated to help revive your self-esteem after it sustained a blow: Make a list of qualities you have that are meaningful in the specific context. For example, if you got rejected by your date, list qualities that make you a good relationship prospect (for example, being loyal or emotionally available); if you failed to get a work promotion, list qualities that make you a valuable employee (you have a strong work ethic or are responsible). Then choose one of the items on your list and write a brief essay (one to two paragraphs) about why the quality is valuable and likely to be appreciated by other people in the future. Do the exercise every day for a week or whenever you need a self-esteem boost.
The bottom line is improving self-esteem requires a bit of work, as it involves developing and maintaining healthier emotional habits but doing so, and especially doing so correctly, will provide a great emotional and psychological return on your investment.