Good mental health has nothing to do with the intensity or frequency of certain emotions. It’s about the acceptance of all emotions. … The definition of good mental health is being willing to experience any thought or any feeling at any time, in any place, under any circumstances, at any intensity, for any duration… without defense. … People who don’t defend against unwanted emotions accept the things they cannot control (like thoughts and emotions). They don’t treat emotions like anxiety as problems and so, paradoxically, those emotions cannot become problems.
Know Thyself 