Thanks, Nataliejo. I think you're right. It's learning to enjoy things in moderation (though I speak as someone who's just eaten a rather large bowl of spaghetti Bolognese). However, it was pretty lean, tomorrow is another day and I'm not going to weigh in until Wednesday, so I still have time to put things right.
Like a lot of you, I tend to graze as well. Because I work from home at a computer, I find when I'm bored, or finding a job difficult, I give myself a little break which, if I'm good, is just a cup of tea or coffee - but can often be more. I've taken to making myself bowls of sugar-free jelly (jello?) as a snack, which is working at the minute. I imagine I could go off it pretty quick, though!