I had a do-it-yourself fail. My dad taught me the old, "Measure twice, cut once!" Boy was I tired of hearing that as a kid. But I remembered it. And even though I wasn't cutting anything, I still thought it applied to gouging holes in walls.
I measured twice. I used a pencil to mark off my points. I drilled...I failed. The shelf was crooked. I tried to see if I could get away with just moving one of the holes. Then I accidentally rammed the wall anchor so far into the wall it disappeared.
So I redid them both. I measured again. I marked where I needed to drill. I measured the marks. I re-marked, because it looked just off enough to be a problem. Wall anchors, screws, shelf. Level. Ugh.
I moved the anchors a third time. This time I almost had it. But now the anchors were so worn out, the whole thing tipped forward.
I facebooked it...a friend said they see a laser level in my future. They were right. Frickin' laser beams, here I come. (And if you know of a certain Dr. Evil, you'll know my use of "frickin'" is not gratuitous.)