Whatever your spouse is complaining about you would have also been noticed by others that are not in relationship with you and therefore have no reason to correct you or bring it to your attention…. Therefore, look into those complaints and make a better you out of it.
A spouse that’s not willing to change is a spouse that doesn’t want the progress of his or her relationship/marriage ….
If he or she doesn’t or cannot point out your flaws, why are you then in a relationship or marriage? Maybe you are only helping each other out in the sexual department or payment of mortgage/bills/rent etc…
Accepting corrections and changing for the better is a mark of honour in someone that respects himself or herself….