On getting out of the box:
I like to make a simple, looped backing track for myself - working from a rhythm-based standpoint... maybe 3 minutes long. A simple 2 chord thing. Or a riff. Maybe a single bass note drone. Thats it. Then I'll sit down and attempt to improvise over it... as in TRUELY improvise... no holds barred out of the box playing, using the wrong scales, the wrong notes, the wrong timings...
At first, I was going a very cool pentatonic doodle. It was
boring! But keep at it... find scales that sound different over a certain key... a certain chord... play the wrong notes then end on a right note - did that rock? No? Do it again.
I might come up with this:
http://www.soundclick.com/bands/songInfo.cfm?bandID=641337&songID=4813838
To do the same for chords, I enjoy having a drum loop, then grooving over it. Very rhythm based I am... and the beauty about it is, you will have a library of 4/4 time signature tunes, backing tracks, sample solos, etc etc... and on a good day, you can listen thru all of them then realise.
Am I any different from what I used to be? Am I different from what's playing on the radio? Am I different from my guitarist pals?
Basically, the key to being different is to think different. When you think different you play different. When you can discipline your mind to stop returning to the comfort zones of the major scale, minor scale, pentatonics, anything you are familiar with be it rhythm, notes, scales, tone, sounds... only then can you do something different.
Also, the more you try to get out, the easier it becomes... usually.
Finally... gotta note.... when you are outside the box, you are not inside... and this will follow you to your listeners. What would be a safe, "layperson" kind of listener, would probably not get your antics.
Nothing wrong with the norm but whats wrong with getting out of the box? You're not the norm....