Sustainability refers to the use of resources in a way that allows their regeneration. The concept is easy to understand: Nature, energy, raw materials and money are limited resources. We must be careful with their use.
You are no different. Your mental resources are also limited and you need to regenerate. Your thoughts and beliefs can deplete your psychological reserves. Being in attack or defense mode all day, for example, is not sustainable. If you don't regenerate, you will end up with burnout.
A sustainable state of mind prevents illness and is essential for performance at work, healthy relationships and growth.
Is your mental state sustainable?