Addiction is addiction. I quit smoking cigs, but let me tell you the first few tries, when payday came around I heard the EXACT same things from inside my head.
when i have money. something inside me says, your a good girl all week and you got a stack of money, so why not jus spend some of it
That is when I now tell that voice "hell no". Otherwise, I start and once I have started I loose my ability to stop.