Here's a random guy on the internet's take... Start simply by limiting yourself to 4 notes. Wail, hammer-on, pull-off, and bend them until you can make them talk. Add extra notes out of the scale after you get better...
For ex., under a minor chord pick the IV-V-VII-I notes (For Amin that's D-E-G-A, play that A an octave above root.) Just sit there and play those 4 notes with bends, pull offs, slide ups and mix up the rhythm until it gets some soul. Whatever you do, don't be systematic. beer helps... and record yourself so you can review for what works and what doesn't.
For ex., under a minor chord pick the IV-V-VII-I notes (For Amin that's D-E-G-A, play that A an octave above root.) Just sit there and play those 4 notes with bends, pull offs, slide ups and mix up the rhythm until it gets some soul. Whatever you do, don't be systematic. beer helps... and record yourself so you can review for what works and what doesn't.