Lack of sleep contributes to a range of mental health issues such as panic attacks, anxiety attacks, depression, anger and stress. In order to combat those issues, it is essential that you are conscious of your own self and the way you feel and act on your emotions, this allows for a relaxed and healthy mind.
Our mental health is very much connected to our physical health, sometimes we do not notice it ourselves but when we are becoming stressed or anxious, we would generally not have an appetite leading to severe weight loss, headaches and other health problems. This is an example of how mental health affects our physical state as well. There are ways to be holistically healthy to allow for a healthy state of mind.