Compulsion to buy

From an interesting CBC documentary on habits, ask yourself 6 questions before you buy something:

Why am I here?
How do I feel?
Do I need this?
What if I wait?
How will I pay for it?
Where will I put it?

Brilliant.  I know that if I did that every time that I shopped, I would not own even 10% of all the stuff I currently have.