I have two pretty good stories, one that happened to me and one to my playing partner.
First story -- I am playing a long dogleg left par 4, about 420 yds. with really tall trees along the left side making it almost impossible to cut the corner. The green is large and flat with a large bunker on the left side and a large pond on the right. Normally the pond doesn't some into play unless you are way way right.
For me it's a really tough hole as I'm not a real long hitter and I have to hit a great tee ball and follow it with a really good approach, usually from about 180+. So I hit a 3 wood off the tee, dead straight to position "A". I was about 185 out and pulled my trusty go-to 5 wood out. Normally I hit this thing like most people hit a 7I or 8I, it's automatic -- high and long. Only this time I hit it off the toe, very short and almost in the water.
I was steaming mad at myself and walked about two steps and saw another ball just in the rough. So I went over to it, rolled it back into the 2nd cut and let it rip at the middle of the pond. In the middle of the pond is a big fountain head which made a handy aiming point. I hit the sweetest shot, high and long and drilled the fountain head dead center! It made an incredible "doinggggg" sound that startled players on the surrounding two holes. If I had hit the same shot one shot earlier I would have been pin high!
Moral: Sometimes it's better to relax, then grip it and rip it.
2nd story -- I was playing with my golf coach in high school. He was a 75 year old retired banker. thin and wiry and couldn't hit the ball further than 185 or 190 with ANY club. But he hit it dead straight every time.
We tee it up on the 18th hole, a straight, rolling par 4 about 390 yards. The clubhouse drive runs along the left edge and is tree lined. The green sits in a swail right near the clubhouse by the parking lot. I hit a driver dead down the middle. My coach hits his tee ball and pulls it dead left, something I had never seen him do before. He just shook his head, figured the ball was gone and hit a provisional, which he played through the green.
Yep... his ball hit the drive and bounced and rolled and bounced all the way down to the left edge of the green. When we got there, we realized there were 3 balls on and the 3rd was his first ball. He dropped the putt, about 15 ft. for an eagle. I always teased him about being a long hitter affter that and sandbagging us off the tee...
Moral: Sometimes it's better to be lucky than good.