"There've been times when I've bought a whole pound of cheese and walked down the street and eaten it in one go"

In this quote, Helena Christensen is explaining a time when she enjoyed a guilty pleasure of hers - consuming an entire pound of cheese in one sitting. Making use of "there've been times" recommends that this is not a regular incident for her, however rather an unusual and spontaneous act. The fact that she points out walking down the street while consuming the cheese includes a sense of carefree and uninhibited habits. This quote could be interpreted as a tip to enjoy life's easy satisfaction and not be afraid to enjoy them every when in a while.