Zak.. I wouldn't give up hunting for this year if ur confident to take any shots within 20 yards. The worst thing that could happen is you see deer all around you but to far! You will learn from the expierence. See how deer react when you use different scents, calls, etc. Just get used to being in a tree and sitting still! Remember know what your shooting at way before you draw your bow!
Thats my 2 cents worth. Hopefully some others can help ya out a bit more