If you're not in the game, then you're not in the game. Don't sit dead stands waiting for things to happen. Get down and make things happen. It's better to be on the ground on hot sign than in a stand that's a dead zone.
Keep mobile. Deer will respond to pressure. You can not entirely predict when and where that pressure will occur. Places that looked good in spring scouting may turn into a wasteland after opening day. You want to be able to respond. Fixed stands are fine, but have a mobile setup.
People seem to be going in farther and "hunting harder" than ever before. The edges of the woods are often overlooked.
Deer can see better than many give them credit for, especially in low light. Try to keep yourself in cover.
You won't beat their nose with fancy suites, sprays, cover scents, or carbon, silver, holy water, campfire stories, or herbal essence. Play the wind. Learn how the wind flows over the land, how thermals interact with the wind in the terrain you hunt, how that changes in the AM vs PM, etc. The deer will use this to their advantage. So can you. If you can predict how the wind will behave and specifically where it swirls, you can predict where bedding could be.
Most deer die during the rut. But next in line is the early season. Don't blow it off waiting for cooler weather. Grab the thermacell and hit the woods.
Stealth matters. Go slow, keep your head up and on a swivel. Don't be in a rush to get to where you're going. You need to see the forest through the trees.
Every ounce counts. If you're carrying gear you rarely use, leave it in the truck. Do those double-step climbing sticks spend more time under your feet during the climb, or on your back during the hike? Choose wisely what you hump in.
Check the zero on your firearms every year before hitting the woods.
Shoot your bow as often as opportunity allows. Even if it's only at 10 yards in your basement. Develop that muscle memory.
Practice shooting from an elevated position. You can be surprised at how this can move your point of impact around.
Don't be afraid to go in blind. I would rather hit unfamiliar woods than woods I know if the deer vacated due to pressure. Plan evening hunts and scout your way in. You can do mornings too if you time it right. ID a terrain feature you want to start at and hit the woods just before grey light and scout your way in.
Don't undervalue in-season scouting. Hot sign is hot sign.
Don't overuse your calls. Nothing turns a deer inside out quicker than someone turning over a can every minute, or hearing the wrong calls in the wrong situation or at the wrong time of year. Peter Fiduccia has some good videos on YouTube about how to use your calls.
Don't be afraid to bump deer. If you're not kicking them up from time to time, then you're too far out of the game.
The rut is hot where it's hot, and it's not where it's not. If last year's spot has no action this year, get down and go find them.