Whenever you've heard of "having no ego", "letting go of your ego", "killing your ego" etc.
Remember that it's mostly watered-down, consumer-friendly western versions of very, very old eastern concepts.
(01:59) Self-esteem Coming From the Unconscious Observing Your Actions
(03:55) Definition of "The Ego"
(05:44) "Having Ego" vs. Attachment to the Ego
(09:07) The Maturity of Eastern Cultures
(10:27) Everything is Context Specific (Including the Teachings)
(12:01) How to Find a Better Source of Self-esteem