A lot of times, I put the food on my plate to eat and then, right away, pack the rest for the frig. It helps me not go and get seconds. If it is a whole roasted chicken, I will cover it loosely, eat my supper, then go pick the meat off the bones and refrigerate. I try and not let anything set out for more than 1 hour after I cook it before it goes in the frig. I try also and take some masking tape and date things that I put in the freezer and also jars of stuff I open and put in the frig. Do the same with spices as sometimes those best by dates get rubbed off.