Project Life before? The general idea is to take at least one picture a day for a year to document your family's daily life. This will be my third year in a row attempting. I've never made it past January before and am still working with the very first original kit of materials. You can see some of the contents in this Q&A post by Becky Higgins from waaaaayyyyy back in 2008 and a few completed layouts with the first kit from Maggie Holmes, here. Back then it was a concept introduced in Creating Keepsakes magazine but I'd say it's one that's really taken off with whole blogs devoted to it and lots of digital supplies and kits designed specifically for it.
I thought I was done with trying. In the past, once I missed a few days, I'd get frustrated and feel guilty about the empty photo pocket staring at me from the weekly layout. Then I'd just give up. What motivated me to give it yet another go was looking back at the few pictures I do have. There are some real gems there, that really brought back little memories of things ER used to do. They tugged at my heart and I know they wouldn't have been recorded otherwise, it made me wonder what other stories did I miss.