Well, I guess that is why photography is an art. If it was always easy, then it would be no achievement to get a really good pic. If anyone could just point and shoot, what would be the fun for the enthusiast? No pain, no gain.
What annoys me, though, is that I more than sometimes forget to check one or more of the settings before I shoot. LOL. My own fault really. But you know how it is. You see what looks like a great shot, pull the camera out, compose, focus, shoot. I have been trying to get me to slow down and be more deliberate about the whole process.
One way that I have found that is successful for me, is that when I can I use a tripod. I know that is a dirty word to some, but when you use a tripod, it makes you slow down, and spend more time getting it right before you press the shutter. Another benefit is that then I can use the Exposure Delay Mode, in conjunction with the self timer set on 5 seconds, which is almost the same as using mirror up mode. Now the shutter press does not move the camera even slightly, and my pictures are noticeably sharper. This has greatly increased my keeper rate. Also, I have begun to use the Info button to show the camera settings on the back screen, which is easier than peering through the viewfinder or trying to read the top panel in sunlight.