Psychological sustainability refers to an individual's ability to maintain a healthy and balanced psychological state over time. This concept is often applied in the context of sustainability more broadly, as it is recognized that maintaining a healthy and balanced psychological state is crucial for long-term wellbeing and the ability to engage in sustainable behaviors.

Psychological sustainability encompasses a range of factors that contribute to a person's mental and emotional health. These may include having a sense of purpose and meaning in life, feeling a sense of control over one's circumstances, having positive social connections, feeling a sense of self-worth, and experiencing positive emotions such as joy and contentment.

In addition, psychological sustainability involves the ability to adapt to and cope with stressors and challenges. This includes being able to bounce back from setbacks and maintain a sense of optimism and hope in the face of adversity.

Overall, psychological sustainability is an essential aspect of overall sustainability, as it is necessary for individuals to be psychologically healthy in order to engage in sustainable behaviors and to contribute to the wellbeing of the planet and its inhabitants over the long term.