Then it destroys them. To save matches, have a candle burning. Let the flame represent the light of who you are, eliminating the darkness of your addiction. I'm glad I don't have to explain to a man from Mars why each day I set fire to dozens of little pieces of paper, and then put them in my mouth. Anything you abuse or overindulge in contributes to your negative thinking.
Overindulgence reaffirms unworthiness.
I don't have to tell you what those activities are for you. I'll list some of the popular abuses. Yours may or may not be among them, but you'll get the idea. Knock it off. It may be killing you.