Inner peace (or peace of mind) refers to a deliberate state of psychological or spiritual calm despite the potential presence of stressors. Being "at peace" is considered by many to be healthy (homeostasis) and the opposite of being stressed or anxious, and is considered to be a state where our mind performs at an optimal level, regardless of outcomes. Peace of mind is thus generally associated with bliss, happiness and contentment.
Peace of mind, serenity, and calmness are descriptions of a disposition free from the effects of stress. In some cultures, inner peace is considered a state of consciousness that may be cultivated by various forms of training, such as breathing exercises, prayer, meditation, tai chi or yoga, for example. Many spiritual practices refer to this peace as an experience of knowing oneself.
Inner peace can be described as "a low-arousal positive emotional state coupled with a sense of balance or stability."