Adequate sleep, lower intake of sodium, exercise and other dietary changes can/will lower BP. Are you measuring your daily intake of carbs, fats, proteins, sodium?
To confirm, is your 105/72 without medicine?
No, I'm not measuring my daily intakes. But my wife and I are careful to buy low sodium products. We check the labels before buying. We've moved towards (supposedly) healthy fats and oils. We eat allegedly safer meats (wild fish, grass-fed/finished beef), but in smaller portions.
I think we still eat more carbs and sweets than we should. We've gone to healthier cookies. But, at my age - 61, is there a healthy cookie? A better idea for an after lunch or dinner desert would be to eat a strawberry. But we are not there yet, and prefer a couple of cookies after lunch and something like a chocolate muffin after dinner.