Impulse or Investment?

I'm slightly addicted to shopping. On bad days shopping never fails to turn my mood around and on good days shopping just lifts my mood to a place of pure elation. Money's a little tight right now so I promised myself that I wasn't going to buy anything substantial until my checking count was a little plumper. Well friends, today I failed massively. I bought the most unnecessary, ridiculous thing ever - sunglasses. I already own at least five pairs of very nice, fully functional sunglasses - plainly put, sunglasses were the last thing I should have spent my money on today. But when I saw the Oliver Peoples Harlot sunglasses on Gilt this morning, I knew I wasn't going to be able to resist. I have an uncanny ability to justify any purchase I make, no matter how ridiculous the purchase appears to be on its face. Sunglasses? Of course I need sunglasses! I live in California so this summer I'll wear sunglasses every single day. And the Harlot style? Classic! I'll wear these sunglasses for the rest of my life. So really, this purchase wasn't impulsive, it was a total investment...right? What "investments" have you made lately?

P.S. If you aren't already a member of Gilt and are interested in becoming one, here is my personal invitation link - join and let the rationalizations begin!