I use many tools to work on my timing, metronome, click tracks, playin with cd's and everything, which are all excellent tools, but if you wanna be real honest with yourself and you have the luxury, record your self playin, like if you chuch has the ability to record stuff, just jam with your band at church, then listen to what you just played, you'll be suprised how off you sound sometimes and it will do nothing but help you better learn how to accent songs and really layback and just relax into a groove