I often give presentations to clients as part of my job and when I was starting out, I used to try and psych myself out with power talks. It never worked, I was typically a nervous wreck. Thats what I see when he says "I never get nervous".
Someone should show him the 1-2-3-4 breathing method. making sure you have enough oxygen in your brain is like 90% of getting over nerves. If not, he has the potential to develop the yips...