Originally Posted by: ChristopherSchlegelThis is a normal for all beginner guitarists. :)
This could just be me, but I find this is a skill that will fade if I don't practice it. A great practice song I find for string striking accuracy is Wish You Were Here. It combines strumming chords and picking out single notes. Another one is Folsom Prison Blues where you strike alternating bass notes and hit chords in a constant rhythm. You'll find a lesson for Folsom Prison Blues here.
If you can hit the single notes in combination with playing chords in a rhythm, you'll have no problem hitting the string you want in a lead situation.
If I don't play these types of things on some regular basis, I find my string accuracy gets sloppy.