There are two focus rings on a binocular and it sounds like you are trying to use just one of them. The first one that should be adjusted is the diopter adjustment ring. It is usually on the right ocular lens but can be part of the center focus ring. To adjust this one close your left eye and while looking through the right ocular lens at a distant object turn the adjustment until the object is sharp and clear. Then either lock it in place or leave it alone. From then on all you should need to adjust is the center focusing ring.
Try to put your tree stand in a tree with plenty of background cover, keep the prevailing winds for that time of the year to your face, and take care of those pesky squeaks and creaks your stand may have developed while sitting in the shed. A good treestand lube can be made by heating petroleum jelly until it reaches a liquid form. Some hunters have reported success by including a cover scent in this mixture before applying it to their stands.