How to have sex with my husband again

The relationship teachings here in SCS say that the quality of my relationship is all up to my thoughts about my relationship and the other person. So if my goal is to change my relationship to a good and fulfilling one, I need to work on my thoughts. How does this work if the goal is to have a sexual relationship with my husband again? The (platonic) part of the relationship is fine, but it has been several years since we had sex and he is the one who does not want sex with me (largely due to him having a manual for me about how I should have behaved in our relationship in the past and how I should approach sex with him). I surely cannot thoughtwork my way to my dream sex life with my husband all by myself, can I?