I'm on a break from therapy for a while and I find meditation and journaling to be very helpful.
Write the sad thoughts to get them out of your head. Turn the page and write about a happy memory that is special to you. Write about the people in your life who are close to you and what you like about them.
I listen to podcasts that focus on good mental health and that also have a guided meditation at the end.
It felt like a bit of a slog at first, but I found it really comforting once I got further into it and started reading about the part I was interested in getting to, which is how to start on the path to being a more mindful and grateful person in my daily life.