Of course I have comfort books, which get read over and over again:
1) The collected works of Jane Austen (minus Northanger Abby);
2) All the Harry Potter books (currently am re-reading and am in the middle of "The Half-Blood Prince") because we have Death Eaters in the WH;
2) Anything by Bill Bryson, from his travel books to his English language books, to "The Brief History of Almost Everything"...
Plus other books but I'm out of characters.