is it ok to leave your kids to heal the pain cuased by husband ? Im so much pain , breakdown and get panic attacks .?

Is your husband harmful to your children?  Is there a reason your children can't come with you?

Every family situation is different so I'm not going to judge your need to leave, but if you're not safe around your husband I wonder if your kids would be safe alone with him? Was the thing he did hurtful to just you (ie, he cheated), or have they been hurtful to everyone? If the kids are at risk also, then they may be at much greater risk if you're not there to moderate the situation. 

I am NOT saying you need to stay for the sake of your children. What I would suggest instead is that if you absolutely need time to work on yourself and also need to get the kids out of the household, you may need to consider a third option such as moving them into your parents' (or another supportive relative's) house, or leaving with them but making sure you find a good therapist ASAP. Or both. I imagine you're dealing with a lot, but children cannot advocate for themselves and rely on adults to protect them. Their needs and safety have to come first.

Well from experience, if he’s causing you a lot of pain then I assume that he’s causing your kids a lot of pain, too. 

The old man caused my mom a lot of pain and he also inflicted a lot of pain on his kids. When my mom left him, she took all of us along. 

So why is it ok to leave your kids behind to suffer while you get away.