You can do this Zorilla, I was addicted to Meth and kicked it 13 years ago sucessfully, and now I am trying to kick a Vicodin addiciton. The "up" feeling that your addies gives you WILL come naturally, I never thought it would. After staying up for days at a time, sometimes a week and seeing everything under the sun outside my window (hallucinations). I know EXACTLY where you are coming from and how you feel, we all love being high and that energretic feeling, but we cant use anymore to get that. It will come naturally, its just going to take time.
By the way, I am on Day 2 clean, so I am still in withdrawls and know how you feel.......