Wow you are sure getting the hang of this DB stuff quickly! sounds like you know what gets a positive response from him - the affirmations, the texts, etc and you're doing it.
I'm so sorry about your horse! How long have you had him/her?
And yes, I go up and down lots. I also feel like when I'm down I'm not being the best possible me. But some days are just like that. Like you say, Day by Day. The next day can be a major turn around.