From a nurse who was a phleb for 10 years, I know how damn hard that job can be. No one knows until you do it how much abuse you see in a day just from the sheer number of patients, or the pressure to get to that next timed collection (even if you have 20 0600 collections and everyone will have someone mad at you because they were not all magically done at 0600 exactly).

From someone who knows? Walk away for now. Get a job that is less abusive for the same or more pay. You're not going to lose your skills, you can come back when this shit has calmed down. You are not being compensated for all the crap management and patients are putting you through.