In short, no.
“Self-care” such as good sleep, exercise, and diet, is important in maintaining our physical health, but you need more to keep yourself healthy emotionally.
Killing Burnout is more than just deep breathing, relaxation, or basic coping strategies. It is a system that helps you build the foundational skills to a balanced life. It teaches you the strategies you need to master all areas of your life, including time management, finances, relationships, spirituality, finding your purpose, true rest, and more.