You need more help hun, and your kids need YOU. Even if you are not at your best right this moment, you are the one they need to be there mom. They will never be better off with someone else being their mom. They will be better of with their own mom who reaches out right now for the help she needs if only because she love her children so much. I know this because I mad the mistake of listen to the thoughts you are hearing and let someone else take over mine and raise them. I was wrong. It was the depression talking. They are adults now and I have worked hard to get back into their lives and things are good, but I missed so much and I will never forgive myself for what I did. Get the help you need for yourself. Get some help in helping you take care of them, but never give them up. You need them as much as they need you. I found out the hard way. I write this with so much love and caring in my heart because i have been where you are. This is a time of making a great committment to live and get better if not for you then for your children whom you love so deeply. There is time later to decide to live for you. Please reach out for help. With love and hugs.