Don't be afraid to stand up for yourself both professionally and personally. Professionally, there's a fine line between being a team player and letting someone take advantage of you. Personally, there's no benefit to having someone in your life that will tear you down.
Be confident in who you are. People change, but having confidence in yourself - whether it's about your choice for lunch, the outfit you're wearing, or a big decision you've made - is an attribute that never goes out of style.
It's easier to be independent than to give someone else control.
Ultimately, lists don't matter. You can get everything done only to realize you could make a dozen more. Prioritize what's really important and don't guilt yourself into feeling badly that you didn't finish something.
It's okay for things to not be okay. Yes there's a silver lining for every situation, but that doesn't mean you have to find it. When you struggle, let others hold you up until you can stand on your own again.
Sleep trumps doing household tasks. Reading trumps sleep. This is the hiearchy of my life.
I'm sure there are lessons I've forgotten and dozens more I will learn, but as long as there's laughter, joy, and things to be thankful for, everything will eventually work itself out.
You're almost here 30 - I'm ready for you.