After 50 years I was due !

I am 64 years old, been playing for 52 years. I have taken lessons for a little over 2 years still not controlling my "sway". I got a new instructor on the morning of the round. He gave me advice how to prevent the sway and I was hitting the ball pretty straight. On the 5th a buddy hit first and he suggested I use the 7 iron instead of the 8 iron. I took his advice and BINGO. Hit behind the hole and spun back in.