It can sometimes be challenging because sometimes people put obstacles in your way and certainly, I remember one case where a very well known neurologist said that I shouldn’t do something and wrote letters to everybody — and this was early in my career — including the dean and the president of the hospital. But, I took advantage of the fact that he left the country to go to a conference, and I did the operation and it turned out to be very successful. But, the reason that I was willing to do it, at the risk of my career in this situation, was because I had studied it very well, and I think that’s a crucial element here. You really need to know what you’re talking about. You can’t sort of go off half-cocked. So, you need to prepare yourself. And also, because I had a tremendous amount of faith in God, I asked God to give me wisdom.