@ OP - Here is some constructive information for you and anyone else who needs a little guidance.
If a melee jumps you, you need to get away from it ASAP. That doesnt mean stand there and force lightning or any ability that doesn't knockback, snare, or stun. Keep in mind, the RESOLVE BAR! If he has full resolve from others stunning or knockback, your only choice is to SNARE with your insta cast 6 second ability. You need to save your Sprint for <50% hp getaways.
When your specced madness - You have to keep distance on people. You have limited defensive ability and this spec DOES the most overall dmg in battlegrounds at higher lvls. As many people claim this spec is based on DOTS, they are wrong. You need to use your chanelling lightning to provide a WRATH proc. Once you have that proc you should burst with your ground AoE, insta dd, and your hardest hitting DD (which will be instant from wrath proc). Above all, keep distance from any enemy player in this spec!
Lightning - You have abilities like Blind from Static barrier, and root on your knockback, but your main BURST should be done after you proc your chain lightning instant. I like to burst in order of Affliction - thunderblast - shock - chain lightning instant (just a start) In bolster BGs, Thunder crits from 2500, shock 1400, chain lighting 2k... 40% hp ish from a 2.5s burst.
hope it gets you in the right direction of creating your playstyle that you prefer