f you are working in a job that you loath, that stresses you from the minute you wake up in the morning right up to when you finish for the day, then you are running the risk of developing a burnout. You are emotionally and physically exposed to prolonged stress moments without escape and this is what drains the mind.  You must stop and review just how important is that what you are doing that is destroying you to the risk of you developing a critical illness.  Stop and review if you need to look for another job that makes you happier or even venture into starting your own business on what you are passionate about