Answer to Question 1
If you find yourself being pulled into the drama triangle, step out of it. Do not become a participant in someone else's game. Recognize the different roles involved and be yourself rather than follow a game script. Deal with parties directly rather than through a third person. Expect others to do the same and assertively stand your ground when they try to pull you into the middle of their conflict.
Answer to Question 2
There is substantial evidence that work stress and burnout contribute to the development of cardiovascular risk including myocardial infarction (MI). Working nights and long-hour schedules also increases risk of an MI. Night work is associated with an increased risk of developing some types of cancer. Therefore, when feasible, it is prudent to change schedules away from the night shift, reduce work hours if they are excessive, and deal with work stress using the tools we use for other types of stress. If all else fails, look for another job. Your health is too important, and without it you, won't have a job.
Employ good self-care strategies to prevent burnout, including staying self-aware, using humor, sharing quality time with friends and family, setting limits and boundaries, engaging in wellness behaviors, enjoying leisure activities such as vacations, and practicing spiritual beliefs.