The tracking itself matters way less than actually doing it, and if you're forcing yourself to use an app that doesn't stick, you're basically guaranteeing failure. I get it - I'm terrible at remembering stuff too, which is why I started writing my mood down in my running journal right after my morning runs since I'm already in the habit of jotting down times and how I felt physically. Talk to your therapist about what format actually works for you, whether that's a simple note on your phone, a random notebook, or even just telling them your observations during sessions instead of logging daily - the point is catching patterns, not perfecting the system.