I learned to let the little bucks walk. 100% of bucks that are killed will never grow any bigger (except in someone's mind or their stories). When I worked in a Sports Shop that also served as a game check-in station, I quickly discovered that the guy who complained the loudest about never seeing (or taking) any big deer usually checked in small 1.5 year old bucks. He also usually arrived to check his deer fairly early in the morning, meaning he probably shot the first buck he saw.
I also learned that you can't be too scent free to deer hunt. I hunted as a guest with a group who cooked elaborate breakfasts before the hunt while wearing their hunting clothes and some even smoked afterwards. I didn't change into my hunting duds until I was about to hit the woods. I saw more deer than all of them combined every time I hunted with them...closer too.
Patience, patience, patience. When you think you can't sit any longer, go an extra 15-30 minutes. It could be the difference in the opportunity at the biggest deer of your life and going home empty handed.
Know the people you hunt with. I have seen reckless, dangerous, un-safe practices, and was lucky not to have been killed by someone I didn't know who was hunting the same piece of woods.
Use your doe tags. I've hunted places that were over-run with does because nobody tried to control their numbers. Any buck with the littlest antler growth on his head was liable to be shot down in a hurry, while the does got a free pass, even if they had a bigger body size.
Spend a little time in the woods on stand before the season opens to get yourself in hunting mode before the season opens. When it is "Game On" you will be more ready for it than if it was your first time in the woods.
Take time to help another hunter if he or she needs it. A deer is easier to drag with two people than alone. I have helped several people find deer that were either poorly hit or the shooter could not find. Venison is too good to waste. Buzzards have to eat too, but they would enjoy roadkill just the same.
Luck Counts, good or bad