Ahh! The ultimate art of soloing! Like OldG said the pentatonic scales will get you there, (Oh yuk Did he say SCALES). There are actually five movable scales that cover the fretboard from one end to the other, & I once asked the same question. The answer I got was - Learn to play all 5 scales & then forget they are scales, opting for playing notes as runs or singularly. The use of various finger techniques like bends and in particular the various types of vibrato. IE. Clapton or BB King, Satriani, Hendrix, Steve Morse Etc. = LISTEN - Copy - Play. One of the best methods of making a solo sound better is to practice singing the notes you hear in your head & Then play same. There are no SHORTCUTS, Just play. Tommy Emmanual from Down-Under in Aust says "The only Shortcuts are at the Butcher Shops!" You are young enough to learn quickly so Play, Play, Play!!!
