When you find a relevant article, make sure to look at the subject terms listed. Think of these as hashtags on Instagram. You can then look for articles with those subject terms to find other potentially relevant items.
Databases also have tools to help you discover subject terms.
Most EBSCO databases have a tool to help you discover subject terms. See Academic Search Complete > Subject Terms
In PsycINFO, use the Thesaurus feature. While mental health is an official term, there are related subject terms you may want to use in your search.
PsycINFO also has anexplode feature that allows you to search for all of these related subject terms in addition to the main term.