J.S.
K.-
I know your frustration. I, too, am a SAHM of two (under two) and it can be trying. My husband doesn't give me much relief because he works a lot so that I can stay at home and raise our kids. However, once the kids go to bed, I have gone on a quick bike ride or walked to the store and just being alone outside of the house is really an invigorating feeling. My husband gets a quiet house to relax in and I get some recharge time.
Also, getting together with friends as often as you can is great. Whether it's old friends or new ones in a local mommy group, adult conversation is needed. I love going out and not have to be looking around to see what mischief my 23 month old is getting into.
Try to do something once a week. Prioritize it. We have a tendency to put our needs on the back burner, but a break allows us to be better mothers. Good luck.