Bow hunting does have it's challenges but, in all honesty, there ain't no secret.

There are three keys to successful bow hunting.

(1) Frequency ... the more often you get in the woods, the more deer you see.

(2) Experience ... as Matt Brock said, watch the deer behavior and learn their patterns. Pay attention to where they came from, where they are going, when they got there and how they got there.
The "when" may often seem random but the "how" is usually an important clue. Deer use the same trails and terrain features and they don't alter much. Hunting pressure will influence the "when" more than the "how".

(3) Define your personal idea of "Success" ... My idea of successful hunting is not centered on killing a deer. I always expect to put two or three in the freezer, but I'm happy with seeing deer (especially an impressive buck once in a while) and having the opportunity to make a shoot/don't shoot decision. If I can leave the woods knowing that I could have killed one and I chose not to, that was a successful hunt.

And, for the record, I also disagree with climbing as high as you can. I will only climb high enough to find adequate concealment. That may only be 8 or 10 feet sometimes. In fact, I may even sit on the ground, on a small knoll or rock outcropping that offers me a 30 or 40 yard shot down into a valley.
Occasionally, I'll need to get farther down into a valley. That's when I try to climb as high as possible.