Hold on Broken hearted. Take deep breaths..Don't think about hurting yourself. Haven't you been hurt enough?
Don't let yourself be hurt anymore. No one can hurt us emotionally if we don't allow it. Detach. Be strong. Your kids need you. Be strong for them and you will benefit from that strength.
I don't mean to minimize how you must be feeling right now. It really sucks. Hugs to you.