Hi, K.-
I'm really sorry to hear that you are having such a difficult time. I'm a stay-at-home mom, too. I have an 18 month old daughter and am expecting another daughter in 4 short weeks. It is unarguably a very tough job taking care of two tiny little people who are so dependable on you. It drains your energy and takes a toll on your patience. Despite that, I love my "job"! I wouldn't trade it for anything in the world. Then again, it's a job I whole-heartedly asked for and my husband and I planned for. I don't know if that's the case for you.
And, even though I love it, that doesn't mean I don't lose my patience from time to time, and need a break away from the house and kids. (I also have 3 other kids that all live at home with us; ages 20, 18, and 15.) It is perfectly normal to feel the way you do from time to time. It's all part of being a normal, healthy human being. And it is also very important to do something -ideally- each day for yourself and no one else. However, I know first hand how tough that can be. Especially if you are exhuasted.
You didn't mention if you are in a relationship. If not, I really feel for you. I raised my first daughter alone. Talk about tough! NO breaks! Do you get any time out of the house with the girls during the day? That can do wonders for me by providing a change of scenery. Do you have friends that you can call and vent to when needed? That can do a lot, too to relieve some stress.
At the bottom of it, though, I'm inclined to suggest that maybe a visit to your doctor might be in order to see if it could be depression that you're suffering from. Depression doesn't have to just be feeling sad or down in the dumps. If you're feeling angry and resentful, those are very real feelings that can manifest themselves from depression. It would be a shame for your beautiful girls to suffer from your dark mood, but also just as big of a shame for you to continue to suffer. Please take some steps to help yourself. After all, no one else will, and you need to be around to nurture those precious babies!
Feel free to email me if you need to vent some more, or for anything else. I truly feel bad that you are feeling so rotten.
Take care-
T.
P.S. Many eons ago I was also into oil painting and have been missing it lately. I'm envious that you have your very own studio! Maybe I could watch your kids for a while, and you could re-teach me how to paint. LOL