I also recently discovered Liven - I was looking for how to cope with burnout, and came across a discussion in another chat. At first, I was skeptical, but after testing it, something clicked inside the app. It very competently helps you figure out why you feel bad, it doesn't just record your mood, but offers specific steps: what to do, how to think differently, how not to drown in thoughts. My sleep improved literally in a week, because I began to do short evening "reflections" in the app and closed the day.