Learning & efficiency:

[Dark Star]

Ok, this is a serious question:
What do you feel is the most efficient way to practice, & learn to play jazz guitar? I've been pursuing this for almost two years now, & at times I still feel like I'm just spinning my wheels; from this DVD to this audio lesson, from this approach to that one.
Because I work full-time & have a family, college courses are pretty much out of the question, & even consistent lessons w/a single instructor have proven to be difficult to maintain. That hasn't been all bad, though, as I have been exposed to a variety of approaches taking a lesson (or month of lessons if finances permit) from different instructors.
I am, however committed to study, & I spend much time on my own learning standards & listening to different versions the tunes I have decided to put in my repertoire.
I'm not asking for shortcuts or easy answers, just adivice on the best & most efficient way to spend my time, particularly with soloing & playing over changes.
thanks-

[markerhodes]

One of the most efficient things possible is to master one thing rather than 'work on a half dozen different ones. There is SO MUCH to learn, more than any individual will EVER learn, but if you keep in mind that what attracts you to the guitarists you love is how they play tunes they love, you'll have a touchstone to guide your own studies. What are your favorite tunes? How many of them do you know inside-out? What is it you want to do with them? Answer those questions and you'll know what to study.

[randalljazz]

^

pick something (of the many, many that are worth working on) and apply yourself until you achieve a level of mastery...