Don't give up... One way to get on track with leads is to pick fiddle tunes on guitar,or to do chord fills. Here's a couple of sites for you to investigate, with tab AND sound....

Flatpicking Soldier's Joy melody

Hammer-Ons, Pull-Offs, and Slides add spice to your accompaniment, and are part way to doing leads--

Hammer-Ons, Pull-Offs, and Slides!