Anxiety

Sometimes when I'm happy is when I feel it the most. I've been on medication for a year and a half and it helps -- oh, does it. But there are times that my stomach churns and why? There is no real reason, or no real reason that should be a reason, or something like that. I worry that I'm addicted to anxiety in a sense -- otherwise, wouldn't it be easier to give up? Ironic that I'm worried about it ...