The main tip i have is always do a menu for the week ahead. Over the years i have tried and failed so many times but its working this time and the reason it is working is because i plan the week ahead. I also think having some low or zero point soup in the fridge at all times is great. Its handy and filling to have at any time of the day. I also buy in lots of low point snacks, the WW ones are pretty good.
Good luck