I'm a mom to 2 young kids and I struggle with depression/anxiety. It's tough to find balance when you're barely able to get out of bed in the morning. I try to find time, even just a few minutes here and there, to sit and enjoy my kids. It can be anything, from sitting and reading a book together for a minute or just snuggling in front of the TV. Family movie night has become my favorite time of the week, when we all just sit together, watching a movie and eating popcorn. And I do what I can to be outside with them as much as possible. My kids love to have picnics in our yard. We just cook something simple on the grill and eat it on a blanket in the grass. I've even picked up a cheap pizza and had that for dinner in the yard.
I don't know how old your kids are. Mine are still both in elementary school. The early years were harder as my kids needed more hands on attention. As they got older, it got easier. Mostly now, they need my time...time to help them with homework or watch them ride bikes or play tetherball. Also, I've read to my kids about anxiety and depression (our favorites are, "Is a Worry Worrying You and Up and Down the Worry Hill). I'm sure there are books for kids about depression. It helped my kids to understand what I was going through, even at a basic level. And it helped me to learn how to talk to them about it.
It DOES get easier! Hang in there and keep talking about it! You'll get through it!