it's not a curse we can "fight back"
I am sure some people here have managed to learn some theory, found some good exercises and became better guitarists and all that without the help of dvds (because there was no such thing 10 years ago...) or a teacher.
and since people are pretty friendly here they will be willing to share their method
a good planning, a good book with audio files (and a lot of playing of course!

) must have done the trick...