I know exactly what you're talking about with "It"... My "It" came many years ago, but I can remember it like yesterday...
My wife and I were stationed in Alaska, and the Base had an Archery club that held 3D shoots monthly. For some reason I decided to go, and bring my recurve. At that time I was hovering on going full traditional, but went anyway... Low and behold I was the only one in the traditional class... Got put into a group of two "Open" division shooters and a "Bowhunter" division shooter... At least that is what I think the classes where called...
Anyway, we all made introductions and headed to the first target. It was a Ram target downhill at about 20 yards. They proceeded to make their shots at their respective stakes, and while I was looking for the traditional stake, which was not to be found... Remember the only one in the division from earlier??? So I just stepped up to the Bowhunter stake, looked at the target and "It" happened. I looked at the target and I knew I could make that shot. Nocked an arrow, drew to anchor focusing on the vitals and dropped an arrow right in the 10 ring next to the other arrows that were there... When all was said and done, I won the traditional class, and the Bowhunter class... That was my "It" moment, and the rest is history...
"It" will happen, confidence, good form, and a well tuned bow are as important as the hunting skills it takes to get close enough for the opportunity...