Huh, I'm doing the exact same thing, though off-line - I keep a "running log" in Org Mode. A new file every month, and in that file, a new heading for every day, and under that heading, I just type. 90% of it is just me talking with myself. I do it both at work and for personal stuff (two different set of files on two different computers, of course). It's the only thing that I know can reliably ground me, that can keep me focused to at least some degree, no matter how bad I feel, and that can help me process and deal with emotions.