There's a great book written by Paula Hall. https://www.amazon.ca/Understanding-Treating-Sex-Addiction-comprehensive/dp/0415691915
It helped me to learn about the addiction cycle and has so much more valuable information.
Self care is incredibly important. Exercise, quality sleep, healthy diet have been essential for me. Daily mindfulness meditation has also been super helpful in more subtle ways.
You might find this helpful, https://www.amazon.co.uk/Understanding-Treating-Addiction-Paula-Hall/dp/0415691915