I'm not too sure where the achievement counselor is in Kelethin, but if you ask a guard, they can direct you.
when you go to but your respec from the achievement counselor, you will be given a choice of either respecing your character's choices, or your achievements. for you, I would select the one that allows you to reset the character choices. but it is the same person as respecing your achievement points. trust me on that one.