Shopping Addiction Support Group
Oniomania (also known as shopping addiction), is the compulsive desire to shop. Similar to other compulsive behaviors, sufferers often experience the highs and lows associated with addiction. The purchase generates a mood of satisfaction, gives their life meaning, and lets them forget about their sorrows.

Be aware of your triggers. How do you feel right before you shop? Is there a pattern to it?
Buy a little notebook and keep track of everything you spend and write it down in the book. Check your account and make sure you have enough money. Do not spend if you know you cannot affort it.
Before going shopping, make a list of what you will buy with a budget and stick to it.
Try to avoid spending on a whim. Make sure everything is planned.
Try to only have one credit card at the most. Even better to have no credit cards.
You could also join Debtors Anonymous.