I have great to superior teeth at almost 40. No veneers no cheating, I brush, water pick, and floss every day.
YMMV but shit works.
4 cavities and one loose tooth and I promise you I've been hit harder in the mouth than you have. It was my job.
Brush, floss, water pick, stay away from Pop. I mean I love Pepsi so much but only with Taco Bell on cheat day.
PS: once I hit 40 fuck it. Pepsi all damn day.