Couples are gifted with physical intimacy in marriage for their enjoyment. If any medical conditions prevent you or your spouse from enjoying physical intimacy, urgently see a urologist/gynaecologist and together find solutions. Don’t let shyness be a hindrance. Most sexual problems can be solved with good medical attention or counselling.
Commit to working on the negative habits that your spouse complains about. Don’t accept them as an unchangeable part of you and expect your spouse to live with it without making any effort to improve. Overcoming your negative habits is possible if you decide to work on it with God’s help.