This worked for me. When I worked in OR, I did a school project with the staff development group in the hospital where I worked because I wanted to move into that area. When a position opened, the person leaving called me and told me I should apply. Learn to build bridges, not burn them. Keep in touch with former coworkers, even if it's an annual holiday card.
Nursing really is a small world.
It takes a sense of humor to navigate the waters of career searching. Don't forget to share this prescription with your friends.