Your husband sees something wonderful in you, and you have to trust in that. You have good qualities, its just that they dont stand out to you as much as the bad does.
When you hand brushes your hair each day, carries food to your mouth and does other things... we never realize it or appreciate it.. but the day that hand is suddenly in pain - WOW do we ever notice that hand then!
Pay attention to your body.
When you start feeling that tight wired up feeling (back of your head? chest? wherever you feel it) take that as your body's way of saying "okay hon, time to take a break" and self sooth in a tub, or on a walk, or in a room reading. Say that you've been fighting a headache or whatever you need. Just put yourself into a safe space.
(hugs)