a few points I'll make.

the positive thing I agree with. When I worked in sales I got really pissed off cos it seemed every time I listened to the coaches my sales got worse.

they were obsessed with the whole positive thing. I actually sound I got better sales saying you'll end up paying more with (competitor). than you''ll pay less with us.

In the 48 laws of power it says that powerful people avoid conflict and instead stab them in the back or get someone else to kill them. So being confrontational makes you look like a loser.