4 Years, Still stuck

It's been four years since DDay for me, and the prolonged trickle truths.

I am having issues with resentment, and just an overall inability to feel emotional towards my wife. She's going through some health problems currently and I am there to help with chores and what not, but I really have no emotional interest. I feel like I've walled myself off from letting something else hurt me, in relation to her.

I am just wondering if anyone else has had this stuck feeling for as long as me, and how they went about healing, I suppose.