I'd say tinker around with some random sh!t, harmonizing is probably easiest when it's your own background that you're playing against. Play like a rhythm, or "light" sesh, use that as background, maybe solo over it, mayube do that inversed, or just keep adding ideas to the tune as a whole - then when you have too many to have comfortable use, start sieving some unessential licks - you must have substantial "slow paced" portions of songs, or else you will have a dull, dead sound...it's good to play around and switch keys a lot for little stints...I don't think you'll have any luck finishing what it is you're currently concerned with for as long as you're not just sitting there playing and manipulating what you randomly come across...I think you could have your "prob" licked in 5 minutes, just grab the guit on the strangest day when you maybe dont even feel like playing, and who knows...taking a directional stance won't do much - just take it as it comes, if you're not concerned with only achieving one thing, you have all these others which to max out also...it seems to me that THE best guitarists ever, the jazz/flamenco obviously, push themselves RIGHT out to the edge, where they are not only on the verge of disaster, then raid an onslaught upon that threat face to face - the greatest solos I've ever heard are when it at first feels a little uneasy, like something is a tiny bit off as the music is concerned, but then there's that one change or resolution, and it's just perfect, especially when you hear that coming out of a completely random solo...