I didn’t start taking the shot until about 5 years ago. I started getting them after I got the flu for the first time in I don’t know when.
One rule is to never touch your face where germs can enter. Don’t poke a finger in your eye to wipe a tear or itch. Don’t poke a finger in your nose to pick or wipe. Wash your hands, wash your hands, wash your hands... Once you get home, wash your hands and use tissues to blot eyes and nose. That is the rule I follow.
Think that after going to a grocery or pharmacy, you enter your car and wipe your eye or nose. Don’t do it.