A big fan of Russ Harris and ACT (Acceptance Commitment Therapy) in general, especially after reading the Happiness Trap. If you're not familiar with it, think of it as a way to accept your thoughts and urges, without acting on any which are unhelpful. I've found this incredibly useful during periods of anxiety and stress. Because of COVID, they've made the meditation tracks free to download from the website.
Hopefully this helps some Ozbargainers in a tough year.