It took me years and years to realize it, but I'm very sensitive to caffeine and the effect lasts a long time. More than one cup of coffee a day, any time later

It took me years and years to realize it, but I'm very sensitive to caffeine and the effect lasts a long time. More than one cup of coffee a day, any time later than first thing in the morning, is noticeable in terms of getting to sleep. Obviously different people are different, and there's probably something to the argument that if you consume caffeine in exactly the same pattern every day, you will adjust to that as the new normal. But, don't discount the possibility, like I did, that a single cup of coffee before noon can actually be a real factor in whether you can sleep at midnight. Also, having a baby - it gets up early so you have to, and it goes to bed early, leaving you exhausted, so you go to bed early. Health, wealth, and wisdom, here I come. Another good one: learning to tell yourself that if you're lying in bed in the dark, wide awake, that this is still helping your brain rest and recover. I have no idea if that's true, but it's something of a self-fulfilling prophecy.