This really isn't about golf. I have played enough golf in my lifetime to be just thouroughly frustrated with it. I was watching the Tiger Woods press conference after he had won his 3rd US Open at Torrey Pines. A reporter asked him if he was nervous when he teed it up at the 18th hole trailing Rocco Mediate by one stroke. It was his answer that got me, his answer was: "of course I was nervous, being nervous just means that you care."
Here is the best Golfer in the World, arguably the best golfer ever, and he still gets nervous. It vindicated the feelings that we have when go into a listing presentation or a buyers presentation. It is the jitters that we feel when we have researched listings then take buyers to see them. It isn't necessarily the feelings of self doubt, but rather the acknowledgement that you care. You care that you aren't wasting your buyers and your time showing them homes. It means that you want to get the highest possible price and the quickest possible sale, with the least amount of hassle for your sellers.
So take it from one of the best in the World: It's okay to be nervous, it just means that you care! Have a great week!