Good luck on your weight loss goals. I am sorry to hear you are battling depression and I hope it diminishes soon. As for your latte, I enjoy a starbucks drink daily! It gives me something to look forward to, and is something I really enjoy. The calories you are getting are coming only from the milk. The espresso shot(s) don't add calories, nor does the sugar-free syrup. According to the starbucks.com website, your non-fat latte with sugar-free hazelnut syrup has 120 cals for a tall, 160 cals for a grande, and 210 for a venti. There are even some frozen drinks that are good when you want to give yourself a treat and they won't wreck your diet. A few I will suggest are:
these are all tall, without whipped cream (and I got this from a hungry-girl newsletter)
Caramel Frappuccino Light Blended Coffee (3 WW Points) - 140 calories 1.5g fat, 28 carbs, 2g fiber, 21g sugar, 5g protein
Coffee Frappuccino Light Blended Coffee (2 WW Points) - 110 calories, 1g fat, 22 carbs, 2g fiber, 15g sugar, 5g protein
Espresso Frappuccino Light Blended Coffee (2 WW Points) - 100 calories, 0.5g fat, 19 carbs, 2g fiber, 15g sugar, 5g protein
Mocha Frappuccino Light Blended Coffee (2 WW Points) - 140 calories, 0.5g fat, 28 carbs, 3g fiber, 19g sugar, 5g protein
I don't feel deprived when I go to starbucks and yet my calories are still well under control. Good luck! love, Julia