Egomaniac with low self-esteem
I've heard this phrase in AA meetings. I can relate to it. I think I have a ginormous ego that I used alcohol to placate. Now that the booze is gone, I find my other urges and instincts flaring up. The 7 deadly sins come to mind - greed, envy, lust, gluttony, wrath, sloth, and pride. I am victim to all of them. My ego/addiction wants an endless amount of whatever will satisfy it. My low self-esteem basically tells me I'm not good enough.
The BB of AA talks about how only a spiritual experience will cure our malady. And to give rather than look to receive.