Thank you for your service bishop - as a woman who is the breadwinner for her family (hubby has health issues) and who has served as Primary President for 5 years, I've often felt swamped with zero time to do anything but take care of everyone and everything else but myself. My heart has always been lifted by watching our bishop, who manages to hold down a full-time job, maintain family life AND the huge demands, responsibility and sacrifice of such a demanding calling. The sacrifice of the bishop's wife is also hugely appreciated as she has to hold down the home fort while her husband is away with work and church responsibilities. Seeing what our bishop and his family cope with helps me to realise that while my calling may have seemed all-consuming sometimes of any spare time I have, it's nothing in comparison!
I was also just released and for the first time in years, last week I sat in Gospel Doctrine and I have to say it was kind of exhilarating to just sit and not have to do anything but read and answer questions. Maybe you will feel that way once you are actually out in the congregation again - in fact, I felt a bit 'lazy' for not doing anything.
As people have mentioned in response to your post, there is plenty of life after being released! Our ward has had 4 bishops in the past 10 years - two moved out of the ward and now serve in other callings, one is in the stake high council. Every one of them have said they were glad to be able to sit in church again with their families.
May you be blessed for your service, and don't worry about what comes next - just try and enjoy any quiet time you may have in-between callings