Stress
This is a high stress job, through and through. People's lives and livelihoods are in your hands. If a plumber screws up at the job, the worst you get is a clogged toilet. If you screw up, people could be disfigured for life, blinded, crippled, or dead! (No pressure.)
You need to book lots of high value surgeries and churn out lots of in-office procedures to pay your expenses.
It will be best if you have some sort of stress reliever like exercise, yoga, or maybe some Prozac to help you deal with your hectic schedule and the increasing demands of being a Beverly Hills cosmetic surgeon/God.
You won't get a lot of time off and you'’ll need to keep a pretty quick pace in this competitive climate where others will be waiting to scoop up any clients you don't take on.