Happens a lot to me. Pretty happy if I don't double the first hole nowadays.
But as for stories of changing fortunes, when I was a teenager I played in a 36-hole tournament. Play 18 the first day, then it gets flighted, then play 18 the next day.
First day I shot 97. Second day 77. My nine-hole scores went like this: 52, 45, 42, 35. I know! Should've played another 18!
Everybody accused me of sandbagging but the truth is I just played like crap the first day. Nothing more to it than that.