I can't give you any specific advice. I think my husband is experiencing a similar thing to you....guilt over previous lives as a warrior and having been "responsible" for killing many many people, seems to be causing him to be apathetic and inert in this lifetime. It's quite a struggle.
I will say that both hubby and I have had sessions in Sacred Santemony with Andreas Moritz (on this site) which have helped tremendously. I also think that reading Andreas' book "Freedom from Judgment" will help you. It's a tremendous book. Found at www.ener-chi.com and www.authorhouse.com