You need to decide what you WANT and what you NEED.
Evaluate your current financial situation.  Take a broad look at the way things are now.  You can call this step taking stock, taking inventory, or even taking a step back to see the big picture.  Whatever you call this step - don't skip it!

Make two lists: a WANT list and a NEED list.
As you are deciding what to add to your lists, ask yourself the following
questions:

Why do I want it?  Or think I need it?
How would things be different if I had it?
What other things would change if I had it?  (for better or
    worse)
Which things are truly important to me?
Does this match my values?