Prioritizing mental health is something everyone should do, the first step to this is recognizing the value of self-care.. This has to do with
Engaging in things that keeps us relaxed and adds to our personal growth... these might include
Going to the gym
Reading
Listening to music  and so on
A very crucial aspect of mental health is engaing in honest and open communication (therapy) ...talking to someone and expressing your feelings and also seeking support are ways of maintaining good mental health.

Taking care of our mental health is a lifelong journey which might not be easy for people going through depression..it's important to seek therapy.
Remember you cannot be productive if your mental health is unstable..your mental health is as important as your physical health