The state of mind you are in affects your overall wellbeing whether you realize it or not. Therefore, ensuring a healthy and stable mind is an especially necessary factor given the lifestyles we follow and the society we live in. So here are some reasons why you should be prioritizing this factor just like any other.
Live a longer life
Depression mentioned in just about any mental health awareness course, is an extreme situation that occurs with the depreciation of ones state of 
mind. The more you feel worthless and find life to be complete meaningless, no matter how much you try to pull your act together there is no way you can overcome this state of mind. However, if symptoms of this mental disease were detected before time, the chances are that you would be able to maintain a positive sense of mind creating a path in leading a happier and longer life. Therefore, if you feel changes taking place within your mind and body, it is best to consult a therapist especially if you find it unable to overcome by yourself.
Healthier physically
Your mind and brain are in control of the entire functioning process of your body. If your mind is healthy and strong, the more motivated you would be to perform well at work and in your life in general. Thus making you healthier physically as well. Have you ever wondered why you end up hurting the people around you unconsciously when you are in pain physically or how something bad that happen at work ends up with a bloody hand needing emergency response training,especially if you have anger management issues? All these are clear examples that show the connection between your mind and body. So if you want to live a physically strong and healthy life, it is recommended that you take better care of your mental health.
Greater productivity
Your work is mostly graded based on your performance and goal achievement. The more progress you make the better you pay and the more recognized you would be. However, to be able to perform at such a level you need to ensure that you maintain productivity. Your productivity is a direct reflection of your mental state. If you are motivated to do well, then your productivity would increase. Thus being able to achieve more goals and tasks. However, if it were the opposite then you would only end up procrastinating work and performing so bad that you might even end up being fired. So making an effort to maintain a healthy state of mind is an essential factor of success in anything and everything. Prioritize your mental health as much as you would for some sort of ailment or the other. Although you might not see the physical wound, it has a much bigger impact on your entire life!