It's a journey, not a sprint.
Don't get overwhelmed. Pick just one thing, conquer that, move on to the next!
So, let's say, start steering you and the family towards a healthier breakfast. With lots of children, and depending on what they are used to, this may take a bit of time, but that is ok.
Conquer that!
Commit to 15 minutes of activity of any kind, by yourself, and or with the family.
One thing so important, YOU are worth taking care of yourself. You can't be any good to anyone else, if you are not happy.
In the long run, small changes, do ADD UP! It might seem like a mountain, but you won't get to the top, if you don't start.
Break it down into small things.
I know, YOU CAN DO THIS!