If you had a small child in your home that was always being put down, how would you treat them? Kindness, perhaps a coloring book and crayons. Perhaps some ice cream and quiet time, or even cartoons. maybe even a stuffie, like a bunny rabbit (floppy one), or a teddy bear. A soft, fuzzy blanket. Time away from all the adult stuff. Even adults need time away from all the adult stuff once in a while. Make an appointment with yourself. Then, don't allow anything or anyone to keep you from spending that hour. You are more important than anything else in the world during that hour. And stop thinking it's selfish, because it isn't.
Now before you say, that's kid stuff. I'm an adult. Let me tell you that the child inside will appreciate the attention. When you were little, was there one thing that made you feel really good? Do you know someone who you admire in the way they treat their children? If yes, ask them if they had a small, neglected child, what would they do to nurture it? Then apply that to yourself. If they ask you why, just say "I know of such a child, and I want to help them." It's the truth, isn't it?