So in Lanayru Desert, there was a tear on the top of a tree. I ran out of time and I had four of the flying, double-sworded Guardians chasing me. It was nearly a minute, and I had like no stamina left, so I accidentally rolled into the tree and a tear falls on top of me, just when the Guardians were ready to swing. I was so happy.
I had a hard time with the Eldin Silent Realm. I had to do it three times.
Also, in the Skyloft Silent Realm, I was literally a foot away from the tear with a Guardian chasing me (The walking ones with the giant sword) and I roll in to the tear, but I missed it by an inch and then the Guard hits me. I was so angry!
But the very first silent realm, when you step out of the ring for the first time, and all the Guardians wake up, for the first time, and when the screen got all yellowish, and nearly peed myself. That shocked the heck out of me.