If your boss talks to you in person about something, immediately send them an email confirming everything they said/agreed. It helps to a) nip any misunderstandings in the bud, and b) deters them from just straight up lying about what was said later because they know there's a paper trail.

Don’t tell anyone when you have a day off.

When making something like soups, stews, chilis or sauces do a bigger batch and freeze the rest. You’ll thank yourself later.

Eat the frog. If you know the worst part of your day is going to be, say, eating a frog, it's best to get that out of the way early and have a whole day of clarity instead of having that weigh on you until it gets done.

Found out I was preggers in HS. I hadn't gained any weight at all, still had a period, and only some weird breast tenderness made me take a test.

Made an appt with a clinic 3 hours away, turns out I was months into it, and only a few days away from the cutoff, as in 'no, you can't get an abortion'. They did mine the next day. Thankfully I was 18 at the time, so I could do it on my own, parents never found out until decades later.

I couldn't believe how close I cut it, and every now and then I think what a completely different (and truly awful) path my life would have taken if I had been a few days later.