in the week, or from the things that you need to use up in your freezer. not having to buy an extra meal each week will certainly add up after a while.
if you want to stop wasting time, then one of the best ways to do that is to set yourself a list of things that you want to achieve in a day, for example. then you can be the most productive that you can be as you plod on and get those things done. i also find that putting my phone in airplane mode helps me to focus and get work done. we can get so easily distracted nowadays, 