You're one of those stubborn and smart guys who can do whatever he wants. I have every confidence in you.
As for the energy, as alcohol is metabolized it results in a lot of sugar in your system. If you were drinking often, you're body probably got used to having a lot of quick energy from the sugar. I've helped some folks through the initial hump as they decided to get dry, and found that fun size Snickers bars helped when they were lagging energy-wise. Of course, you can't keep that up forever or you'll be 1,000 pounds, but maybe for the first little bit, it might help. If the quick fix of a fun-size candy bar isn't for you, consider some calisthenics - jumping jacks or burpees or running in place or something to get the blood flowing and some endorphin popping when you feel that "blah" coming on. Just a thought.
I'd wish you good luck, but you don't need it. You've got this.
Granted B chord amnesty by King of the Mutants (Long live the king).
If it comes from the heart and you add a few beers... it'll be awesome! - Mekidsmom
When in doubt ... hats. - B.G. Dude