Hey Ken,You've been given some real sound advice that should help you immensley.
Now some things from an old codger from a differant perspective.I've been bowhunting for exactly 50 years now and have just about seen it all.I shoot a Trditional bow and bowhunt for one main reason ,Its my life,not just my hobby or sport.I live,eat and breath archery.I've had so many injurys during my life ,even getting out of bed each day is a bonus.Look at it this way .First your out in nature,not at work or a mall full of noisy ,pushy people.Your hunting and inticipating shooting a live animal.What could really be better.Secondly you have the freedom to be able to do this.Millions around the world don't.
Don't preasure your self that you have to kill something,but if you do you will be ready.What the others have said,get away from targets,go out with some judos and just shoot,and shoot and shoot some more.Years ago when I shot I went through the whole sequence,stance,fingers right,bow arm right,anchor right,release right.Now I just go shoot.Picking a spot is the most crucial step in your shooting.Go out and just concentrate on that.
As far as missing ,I won't even take you there.I could fill a big novel on the ones that got away.When people see the ones on my wall there in awe.I laugh and always say the same thing,you should see the ones that are still walking,a couple would have actually been world records.
Relax my friend,smell the roses,be happy for your health and enjoy the big picture.Besides misses make great storys and are alot easier to drag out !