I snack all the time – not good – so I’m loving some of these answers.

I go to bed and sleep

I love having a really hot cup of green tea.

I drink a glass of water, and wait half an hour if I’m still feeling hungry I have something small

Try to make sure the only snacks you have on hand are low-cal or savoury. Much better to have an alternative for sbacking. A glass of water does help to break the habit.

When you feel the need to nibble, drink a full glass of water – this decreases the appetite. Also, try to keep occupied in a room furthest from the kitchen so you’re not tempted to reach out and grab something. If you do need something, try to make it a healthy option, like fruit.

Drink cold or hot water if you need something

After dinner I brush my teeth and go and read in bed. This way there is no chance I start snacking. 🙂

When I do snack at night I have a small portion.

I actually do not mind snacks – but tend to choose healthy snacks.
Maybe look at healthy snacks?