Agony Author: 'How can I feel less jealous?'

More brilliant advice from the world's leading (and only) Agony Author.

Dear Daniel,

Do you have any advice on dealing with jealousy? A man I was at university with has just published a novel that is receiving a frankly indecent amount of praise. Every time I see his book in a shop window I am overcome with envy. How does one behave graciously in this situation?