They create their own stress and weaken their immune system. Many do not eat properly. I have seen them gobble down food on their lunch break, bearly chewing it. Eating cold cut sandwiches is far from a healthy choice. Conference lunches often include unhealthy menus and poor food combination such as meat and fruit.
Coffee is served as well as chilled tap water, both of which are unhealthy.
Psychotherapists have the discipline to get a PhD and write books, but are unable to make themselves a salad at home. After a day of being the caregiver, perhaps they want to be taken care of and have someone make the salad for them. Many therapists have little or no time to spend in nature and become conscious and aware of their connection with the universe. Chances are, you wait to change your lifestyle because you think you can get away with living the way you are living now, since you are so busy and have priorities that come before your own health. You wait for a sudden crisis to occur such as a heart attack, a stroke, the first signs of cancer or a degenerative disease before you are willing to take a good look at your lifestyle.