The more I concentrate on being a dentist, the worse I get at being a husband
The more I concentrate at being a husband, the worse I get at running a business
The more I concentrate on running a business, the worse I get at being a father
The more I concentrate on being father, the worse I get at being a triathlete
The more I concentrate on being a triathlete, the worse I get at being a dentist
Please help me out with this riddle, answers on a postcard (email)