Keeping a visual diary is like that but in mostly pictures instead of just words...
We're required to keep a visual diary for our drawing class and it's been really fun.
First there's the discipline of daily entries...
For the past month, I've made myself put aside time every day to draw.
It's a real luxury to do that, putting aside housework or other things you're obliged to do.
But it's really rewarding - give it a go!