You have very good degree and experience, people know you are smart.
You are smart, but too narrow.
Pick up some useful marketable skills (Not necessarily spend bog $$ and go back to school), then update resume and start looking.
Yes, your degree will help, your experience will help.
Many people successfully did it, why can't you do the same?
如果你十分想往護士工作,建議你在找到好工作後周末到醫院去當個誌願護工就中了.
不必當個專業護士.