I think you burned out all of your creativity on making those wedding shower invites! You need to recharge your creative batteries. So do something just for you - are you due for mani? Have one and go window shopping. Then, you'll be revved up and ready to go!
I hear ya. When I'm really really really stumped which has been alot lately, I pull out a magazine of paper scrapping, and try to mimick a layout, and make it better digitally. HTH.
You could check Designer Digitals for some of their challenges or go through some of the past O challenges...go back really far and pull out some of the older ones or ones you skipped. Maybe do ADSR challenges from this year. ?? Just some ideas. I also broke some block by going through my favorites again.
I am all about TEMPLATES!!!! Sometimes when I am at a block I'll use the template first without the picture then I'll find a picture I have that fits the page I made.