A corollary to this, always speak in private as you would in public. Never say anything about someone else you would not say to them directly (even if you're talking to your spouse about work issues whatever). Sometimes you think you need to, but looking back it's always better to keep your own voice strong and true. It's like playing a violin. The more wrong notes you hit when you practice in private, the more wrong notes you hit when you perform in public. Eventually the bad notes resonate so much they start affecting the voice of the instrument and it starts to develop poor tone in and of itself. The wood particles start to re-align themselves. That's what separates the great instruments from the cheap instruments. Sure the great instruments were made well to start, but they were also played well throughout their lives. Always speak in private as you would in public.