Most helpful thing someone has told you about health/diet??

There is an amusing thread going on right now about "strangest thing someone has told you about health/diet". Pretty funny stuff there! Now I was just wondering what HELPFUL advice has someone given you, that actually was sound advice, and made a real difference in your health or diet?

One thing for me was when my mom told me what a difference protein made for her. She suffers from hypoglycemia, and gradually over the years came to realize that even a small protein snack of a handful of almonds during the day could help keep her from crashing. At the same time, my sister, who is a nutrition coach, told me about how sugar can affect you as well, but in a negative way. Not that it's the devil, but that it can give you a sugar high and then crash if you have too much of it. Putting these two pieces together, we finally figured out a solution for our 4-year old daughter's terrible tantrums and fits. As it turns out, she also suffers from hypoglycemia, and increasing her protein and reducing her sugar during the day made her a completely different child. It was like night and day, overnight, and really saved us from traumatic nightly tantrums. Since then, I've also found that making sure I have enough protein in my diet helps me with my appetite control. Don't get me wrong, we still have plenty of sugar in the house, but we try to limit it to some degree, and make sure we have plenty of snacks with protein in them for the kids and myself! Bottom line, what you eat really can affect how you feel!

The other thing for me was reading about intermittent fasting on the internet. I know it's not magical or anything, but just the partitioning of calories during the day has really helped me with my weight-loss efforts. Of course, I still have to log and be careful, but it definitely helps!