Shyheart,
Oh my gosh, you can do this, and you came to the right place to get support.

Since you did so well with Atkins, start back on the program. Find some exercise that you will stick too daily. Take it one day, one pound at a time and find a thread where you will get the support you need.
I'm doing WW, and I exercise to Richard and the gang. I don't know how old your children our, but maybe you could exercise with Richard and have them join you. Might be fun.
Just know that there is so much support here, and you are not alone. We all striving to loose the fat once and for all.
Cheryl