Drink 5 cups of coffee every day for 6 months. Then quit all at once. That misery you’re experiencing? That’s called withdrawal. If you simply decrease your intake to 2 cups a day, you’ll feel less awake and alert. That’s how you know dependency has set in. If you can’t take those symptoms and go back to 5 cups a day, congrats you’re addicted just like normal people.

Also your English sucks, but that’s unrelated.