New RN, just passed boards, needing job search advice

I am delighted today to find out that I passed the boards and I am officially an RN. I am needing some advice about the job search. I have applied at a lot of hospitals (about 20) and only had one interview. I was beat out by someone with more experience, but have had no call backs about anything in over a month. I took advantage of that time and prepared for the boards. A friend of mine said the problem may be that I am willing to work in any department, weekends, days, nights, anything. She told me I would be better off updating my resume with a mission statement and a focus. She told me to pick a couple of hospitals that I would like to work at, think of which department I would like the best, and shift preference. She told me to reapply with all of this. She said this does not mean I would not take another offer, but I would not look as desperate if I am focused. I think I will take her advice, but besides that is there anything else I should do or include in my resume to help catch an employer's eye? Is there anything special I need to put on the application? I am wondering if I am doing something wrong, or if employers just did not want to hire me until I passed the boards.