If those testimonials aren't enough, I too have kicked the habit of energy drinks (actually about the same time...4 days or so?) along with fixing 96% of my diet. The best advice I can give is:
After a few weeks or so, when you're confident in your ability to not have them and no longer have an extreme desire to have one, you may be at a point where you think it'll be nice to 'treat yourself' to one just for that time being.
While some people may be able to do that without much issue, I personally donn't recommend it.
I have a terrible time, because that 1 drink on that 1 day turns into just 2 then next day and so on and so forth. It starts to re-build the habit.
Next thing you know, you're fighting your ass off again just to resist them and have basically pushed yourself back to the start.
Keep it up! Your testimonial has also helped remind me to not slip from this point on, too. Thanks :]