Listen to or watch something that's intelectually engaging. You can't stop yourself from hearing the sound, but you can prevent yourself from noticing.
I also would like to suggest a varied diet for health reasons. Just a suggestion, but consider it, it generally makes you feel better and appreciate your favorite food more when you do eat it.
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"How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?"
Sherlock Holmes in The Sign Of Four (1890), ch. 6