Mental health has been slowly emerging as an important medical and societal issue. Many people agree that mental wellness includes the ability to feel calm and focused, to have positive relationships, to be able to solve problems, and to cope with change. The truth is however that everyone has mental wellness, no matter how severe their problem might be. Mental health is simply a state of being mentally healthy. It's useful to consider mental wellness as a health continuum ranging from absolute well-being to absolute un-wellness.
Just as physical health and mental health are correlated, it's also helpful to remember that mental wellness can also lead to overall physical health, in that feeling happy and healthy can affect every other part of your life, from your emotions and your immune system to your well being and your fitness level. Mental health can influence every area of your life - from your feelings of self worth and motivation, to your energy level and productivity, to your finances and relationship status. And just like physical health, your mental wellness can be impacted by the amount of stress you're exposed to on a daily basis.
One way that mental wellness can affect your physical well being is through reducing or preventing illness. As someone who works with people who struggle with anxiety, depression, or other mental disorders, I've often heard these individuals say things like, "I don't know why I'm so stressed, everything's fine." Or, "It's just one day in my life, when I get this stress in my life I get over it." However, just like any other type of stress, these statements are only true in the sense that the stress doesn't overwhelm an individual until he or she cannot handle it anymore. When an individual realizes that what's stressing them out is not normal, and begins taking steps to deal with the issue, sooner or later that stress is reduced or prevented, resulting in a healthier, happier life.