You know when you're addicted to Zelda when you think of the triforce when you see a triangle.
You know you're addicted to Zelda when you spent countless hours recreating an important item in Zelda, like the Master Sword, the fused shadows, ect.
You know you're addicted to Zelda when you see a really big tree and expect it to talk to you.
You know you're addicted to Zelda when you see a fairy and try to tear it up to shreds.