I am lucky enough to be committed to two trips in the next 12 months. We just bought airfare for Ireland this September, and have a deposit on a transatlantic (Iberian route) cruise next April, to be followed by about 12 nights of land travel when we disembark in Barcelona.
Yet I find myself combing the forums here and feeling a bit envious of others' trips... Cinque Terre? Still on my list. Southern Italy? Oooh, wanted to go there too. Another question about Swiss rail passes - was going to go to Switzerland this year but for budget reasons decided to leave it for another year. And those tour scrapbooks - one day I'll do an RS tour!
Please tell me I'm not alone and that whatever you book, you still long for other trips and as ridiculous as it sounds say to yourself "well, maybe in 2017".