Well as the first to comment I will throw out a variety of ideas. On gear a quality set of binos, that are compact enough to carry and use, and of good quality. 8 X 40 is a nice size for me. The best heavy boots you can buy will also get you around on steep hillsides and canyons. The steeper the better the quality. Wool pants for late season, gators, and waterproof gortex also for late season. Quality rain gear for you and your scope. A moderate sized day pack for your rain gear, lunch water etc. A pack frame to carry the pieces out after the kill. A good map showing the roads and access points, public and private land in your area. Succesful public land elk hunters, typically hunt away from roads (unless they have a special deal on private land or other lands where other hunters are not allowed.) They hunt all day starting before dark and ending after dark. They are not confined by the weekend. (The worst time to hunt). They are familar with their rifle and can shoot it well. Spot and stalk hunting is very successful especially when fairly open country is availabe.
Part 2
I am back, more gear, GPs and of course a compass. I have the most basic of all GPS and it will mark my truck or the trailhead so I may find it in the dark and the game so I also may find it again. I usually turn mine on in the am to mark my jumpoff point, then if necessary turn it on when I need it. Preseason scouting and conditioning are also mandantory for success. Preseason scouting starts with a visit to the fish and game web site, there you look at draw sucess, harvest ratios, season etc. Use you map and Google earth to map and locate likely areas. I have killed two elk in Wyoming, the last two years in units that I have never set foot in. Both kills were areas that I had identified using Google Earth. It does you no good what so ever to have gear and no tag, or a tag where there are no elk. Check the stats closely they are your friend. A young man I recently hunted with said that you work out unitil you think you are ready, then work out somemore. I am older so fitness is done continually so that I don't get to far behind. Hiking in the hills at eleveation with a pack is the best training of all.
Mental fitness, I do not go into the season "wanting to get a shoot" or wanting to see an elk" I go to be successful and maintain that mindset until the last day. Hope this is helping !