I didn't come up with anything to give up this year. Instead, I'm adding some behaviors to help me become more the person I wish to be. There are three things I'm attempting.
40 Bags In 40 Days:
http://www.whitehouseblackshutters.com/40-bags-in-40-days-2014/ to find out more!
http://100happydays.com/ and register.
All good challenges. Even if you do some but not all of it, I think the attention to your life and the improvement in your attitude would be worth it.