The doctrine of election tells me that I have nothing to boast about myself. But for so long, I've been using it to look down on others since they have nothing to boast about themselves. "Sure, I don't deserve to be loved by God but neither are you!"
As usual, the problem is not the doctrine, but it's my superficial belief in the doctrine. It is my depraved mind that abuses a good doctrine to hide my insecurity about myself and to justify my unloving heart.