Search more than one database - PsychInfo, and CINAHL will have literature that PubMed / MEDLINE does not
in PubMed - MeSH heading (with year introduced)
Burnout, Professional - 1990
Burnout, Psychological - 2019
Mindfulness - 2014
Resilience, Psychological 2009
Self Care 1981
If you want other heading suggestions - please email me - angela.spencer@slu.edu