use WorldCat, the catalog to locate books on storytelling / personal narratives.
Some keywords to use:
"narrative interviews" gay
Use the databases and possible search strategies:
storytelling or "personal narrative*"
lgbt or gay or lesbian* or homosexual* or transgender
To locate articles on students and stress and academic achievement or more broad how stress affects students, use the education and psychology databases.
Some sample search strategies:
stress and "college student*" and "academic achievement"
stress and "college student*" and ("academic achievement" or "academic performance" or "academic success")
stress and (lgbt or gay or homosexual or lesbian or transgender) and "college student*"