I have tried with months of effort a few times. On the good days, I think "I'll put away the compounds for good." How much fun is it to get angry over a 3" group at 30 yards anyway? Then a day or two later, I'm so bad that I wouldn't consider hunting with a trad bow.
My 14 yr. old has always had the knack of shooting without sights, and he really enjoys it. This summer, I am helping him build a flatbow with a nice piece of bamboo. Gotta keep him trying this while he is young so he can develop the skill that his old man doesn't have.