I'm terrible about sweets too, obsessed with them and always go overboard. The main thing that helps me is drinking black coffee or lots of water whenever I get cravings. For me black coffee works because I enjoy it so it's like a treat every time without all the extra calories. That's just something that's helped me, of course everyone is different though. The vegetable suggestion is a good one, can eat lots of those for wayyyy less calories and it's obviously more nutritious than sweets.