3. Affording One

Is it worth another credit card?
Will this purchase make my next batch of bills harder to pay?
Can it wait until you have more money?
Will someone put money towards it with you?
Is the money you are spending on this supposed to be for something else?

These are all very good questions, most of which can be answered by setting a monthly budget and sticking to it. A hard look at your finances, your income and outgoings will suitably answer these questions.