A lot of hackneyed phrases are floating around out there. One of them is, if you practice garbage, after 20 years you’ll end up with perfected garbage. The antithesis of this is, if at first you don’t succeed, try, try again. Both have validity.
Unfortunately, what Robert the Bruce learned from watching a persistent spider while hiding in a cave may not apply to the struggling pistolero. When you’re battling to hit the target on a firing range, it doesn’t help to have the local sage tell you to “remember Bruce and the spider”—especially if he doesn’t have any constructive information. So you wind up with either arachnophobia or a backstop full of expended projectile garbage. Or as a last resort, you could try a different approach to the problem.