Very good advice above, but I think everyone is different, even after 6 weeks I do look longingly at others when they have ‘nicer food’ than me. (Everyone seems to have nicer food than me.) I’m not hungry.
My worst day was 14 days in and instead of 800 kcal I ate 1900. Which is terrible, and yet it is probably still a deficit. So I don’t worry about it. If my 8 weeks becomes 60 days instead of 56 that isn’t so bad. But I do log everything and as I log something I sometimes put it pack.
You should work out what your weakness is and look for a strategy to get round it. I have no problem with sealed packets, but once it is open I find it very hard to resist. This is true not only of biscuits and crisps but also houmous and cheese. So whenever possible I buy individual packets and pots of stuff. The supermarkets sell 4x40g packs of houmous, which is what I buy, along with individual pots of yoghurt. I put as much of the rest out of reach in the freezer, and then get it out the night before I want it. If the cheese is just for me I cut it into 20g pieces and freeze them.
I also think that aspartame makes me want to eat so watch out for low calories drinks, or something similar that makes you want to eat (even if you don’t feel hungry).
Edit: Crossed with SunnyB