Emily Nagoski’s Burnout has some practical advice, but the single most powerful thing you could be doing right now is mindfulness meditation.
Why? Because burnout usually comes associated with a set of bad experiences that we learn to shut out. That is why we need to re-learn to experience life instead of shutting it out.
How can you do it? I personally like the Healthy Minds app and program, but there are plenty online.
Other tips? Yes. Do Loving-Kindness meditation too. It makes you happy quickly and improves your relationships with people. This, in turn, improves your work.
How am I so sure? Check out Sonja Lyubomirsky’s meta-analyses. In them, she shows that the data overwhelmingly shows that happiness is associated with, temporally precedes, and experimentally induces success in work, relationships, and many other domains of life.
Finally, I’d suggest learning the basics of Acceptance and Commitment Therapy. Why? Mindfulness will reconnect you with your experience and avoid rumination, but ACT will also ask you to find meaning in your life. Work can be meaningful if you’re not ruminating and you do the necessary values work. I love Hayes’ A Liberated Mind, but, again, there are other resources out there.