My fear of being rejected leads me to bend over backwards trying to please everyone I meet, altering my personality and picking up on what they might like or want, then going out of my way to offer it.
People don't like us for two reasons. Either you are in some way behaving obnoxiously, or they are projecting onto you some unresolved and split-off parts of their own personality.
Dykhuizen confirms this, telling me that we can look to our childhood for answers, as it is integral to forming beliefs about ourselves.
Craving external validation because you lack inner self-worth hits the nail on the head for me but I find it embarrassing to admit how desperately uncool I am in my desire to be liked.