How to pronounce “fess”(noun) in English

And at that point in time you're really only supposed to be editing a few words, maybe a sentence here and there.And there's a chapter called "Fess Up To Your Failures," which is about a point in time where I really acted like a jerk to our staff.Basically two of our staff members were held up at knife point and robbed, and kind of roughed up, a man and a woman in Guatemala.