I'll admit it, I lined up for the wrong runway once on a 10 mile final.
I was a student pilot in a C152 with about 25 hours of flying time and 5 hours solo. Since then I haven't done it.
I am not god's gift to aviation but I am very vigilant about certain things--bugging runways and double/triple checking is one thing I do. I am sure there are things I could do better in the flight deck so I am always open to ideas and suggestions.