I've "quit" many times before and I'm almost the same way. I get a great high from being sober for a few days, no withdrawal, then on day 3 or 4, I start to feel withdrawal symptoms. I know I had a really weak will in the past, which is why it took me so many times to quit. I'm only about 1 week sober right now, but it's the first time I've been sober for more than 5 days in about 5 years. I fought it this time by just making myself do things that make me feel productive. Chores, taking my bike on the trail, reading a book related to my industry/career, etc. The lonely empty feeling really sucks.