So many topics, so little time!
Implementing evidence-based best practices for trauma-informed care on the inpatient psych unit
Correlation between depression and diabetes and the implications for practice
Effectiveness of Chronotherapy/phototherapy in depression
Effect of exercise on depression
Effect of exercise on anxiety
Effect of exercise on ADHD
"Green Care" which includes horticultural therapy, "green exercise", "green play spaces" etc
Patient-centered/patient-empowerment approaches to dealing with cutting/self-injury on the inpatient psych unit
Of course, all of these reflect my particular interests and may not be anything you are interested in, so really, Whispera had the best advice - identify what you find interesting and then pick an aspect of it to explore and see what you find. One approach may be to find a disorder that you want to explore further, such as depressive episodes in bipolar disorder, or bulimia, or panic attacks, and see what evidence based practice there is out there that has been proven to be effective. Remember to focus on the nurse's role, not just on something like meds which are more medically oriented rather than nursing-oriented. Hope this helps.