I've found the appeal of pep talks is in what they say about the pep-talker. It's basically a way of saying "I like you, I want to cheer you up, I acknowledge that you're not at your best but I don't look down on you for it". It's nice that someone would say that. "Your meds will definitely kick in soon, you're not doing so bad, go for a walk and you'll feel better" is eye-rolling bullshit, but Doctor Reassuring Patient is adorable, and a mercifully easy script to navigate.