Mental health isn't just a given. Just like physical health and fitness, there are some people that genetically might be more inclined to health, and others more inclined to less-health or dis-ease. But ultimately, we can help ourselves towards whatever outcome we desire. We might not ever be naturally the body-type we want, or we might not be able to take away traumatic events, but we can make all kinds of choices that move us towards the health we are seeking. Daily choices, simple choices, easy choices which taken alone mean very little. But cumulatively, these little choices add up into results we can see, feel, appreciate. Furthermore, we then have the empowerment and satisfaction knowing that we arrived at those results, thanks to our own hard-work and focus.
Here is one source to consider for practicing mental health:
https://www.inc.com/murray-newlands/20-awesome-chants-that-will-radically-improve-your-life.html