The Dis-Identification Technique (DIT) (or "Who Am I?"-Technique) leads to self-management and thus to the ability to manage others. This technique is very useful in restructuring your personality and even to attain realization.
The technique can be used alone or along with other techniques like meditation. If it is thus combined with meditation it attains much power in transforming oneself. Be forewarned that the mere repetition of the following does not give you any results. You should understand and experience the truth yourself totally. However, even the cognitive/intellectual understanding of Who am I gives one much insights, even though these may not be ever lasting. For the insights to last forever identify yourself with your true self. This can be done either by repeating this technique continuously or by contemplating on this twice a day.