He was an alcoholic but had recently quit drinking. He didn't say when his problems began but they began and progressed. His problems mounted in his family. His wife left him and ultimately divorced him.
He continued drinking not thinking anything of the problems in his life and their association with alcohol.
He couldn't keep a girlfriend. This was really bugging him.
One day he finally decided to try not drinking because that might be his problem. It took him 3 months to dry out. Once he was dry, he was completely and utterly amazed at the difference it made in his thinking thus his behaviors.
His life began to improve and he found a girlfriend he could keep.
He encourages any alcoholic who will listen to stop. His quality of life improved dramatically and he attributes most of it to having a dry brain that works.