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?
如果你十分想往护士工作,建议你在找到好工作后周末到医院去当个志愿护工就中了.
不必当个专业护士.