Updated: Dec 4, 2018
Medical wise, it's important to refresh your blood from time to time by blood donation which means getting rid of your old blood " partially ".
HR wise, You also need from time to time either refreshing your organization by hiring new people with new ideas Or updating your current employees with the new trend in business world.
Most of Top Managers consider the employees turn over rate is one of the most obstacles & challenges , Although they always complain from Innovation Poverty.
Don't be Afraid of leaving some of your employees , as it's healthy for you and for them to start new challenges elsewhere