Thank you for your honesty...that had to be a difficult disclosure. Well, at least i hope that it was!
I read what you wrote about your highway escapades and it scared me...dude, my daughters are on those highways. Then i realized that unintentionally i have done virtually the same things by drinking and driving in the past. There is no free pass for either of us.
While i don't know much about thrill seeking or sex addiction...it sounds alot like alcoholism....and many alcoholics and drug addicts have found a much better life in abstinence.
Good luck in your journey.