~Re-decorate: Changing your environment can uplift your mood. Even its just a new rug or a couple of new photo frames. I did this little DIY project and its completely changed my front room, much more homely.
~Have a wardrobe clear out: Get rid of all the clothes you never wear. Be really brutal don't keep anything you haven't worn but you might someday get round to. You'll begin to see things your lacking whether its you don't have enough casual tops or you have too many jumpers but not enough skirts. Then you can begin writing a whole new list.
~Buy some new make up: Just a new lipstick or blusher can change the way I view life. It doesn't have to be anything pricey but just something to boost your confidence.
~Count your blessings: This is something I've heard Lauren Conrad recommend. The thing she does before bed is count all the things she's grateful for. Read this lovely post by Brianna Wiest and re-evaluate all the things that you moan about, it could be a lot worse.