Interest rates, credit cards, credit score, money saving techniques, 401K. In other words anything that keeps you from being trapped by poor money management.

Learning when to say no. Learning how to apologise when it's your fault, and how to not apologise when it's not your fault.

Don’t worry if you aren’t living an exciting or extravagant life. It’s okay to live simply and quietly. It doesn’t mean that you’re wasting your life.

The value of walking away from someone toxic in your life, even if it is your parents and family. If you are thinking of it and are scared and have somewhere where you can land in a safe place, then do it. It hurts like hell for a long while, but it gets better and one day you realize how peaceful your life is and you find you only miss the family you wish you had had.

You're not obliged to have children of your own. You can be happy and fulfilled without reproducing.

Not everyone is going to like you, no matter how hard you try.

What not to share on the internet.

That it's possible to do everything right and still lose. Just life innit.

The value of a good/unconditional friend.

How to manage their finances.

A cat on his back inviting a chesty rub is a trap.

Take care of your teeth.

That it's never too late to learn.

That the cliche "you never know when it's the last time you'll see to someone" should absolutely be remembered for every occasion. My best friend just died in a car accident this past Saturday, and the last time I saw him we got in an argument and he left and we didn't speak after that. I'm destroyed by it

That hating people who are different makes you nothing but unhappy.

That you might be wrong sometimes. Some never learn.

How short life is.

That's being wrong and changing your mind is actually nothing to be ashamed of.

How dangerous driving a car can be.

Don’t ever think it’s ok to “talk” to yourself in a manner you wouldn’t let another human being talk to you. The biggest abuser I ever had in my life, was my constant companion: the thoughts in my head. We often take care to choose our words when correcting a child or friend... but if anyone had talked to me, the way I talked to me for 30 straight years, I would have murdered them... and probably got away with it too. Be nice to yourself, you’re the only you, you have.

That some things can never be undone. The actions you take and the words you speak will come back around sooner or later.

Saying “I love you” or wanting to reach out to your family, friends, and loved ones, but crippling anxiety stops you. You never know when it may be too late to say these things, so be in the moment, and live/love in the present authentically.

How to communicate.

Sitting on your ass all day is not good for your health at all.

That happiness usually comes from a diverse range of interests, hobbies, and commitments. You are not your job. Your romantic partner cannot be your everything, etc. It's so easy to get sucked into a life where your career is everything or where you wrap your entire identity around your partner. There is nothing wrong with celebrating your loved ones and being close. And there is nothing wrong with caring about your job...you just need more to thrive. I see this so often in relationships. Two people meet and fall in love. They each inspire one another based on their interests and achievements, it's part of what makes them fall in love. But slowly, over time, they let those hobbies go. Stress gets in the way. Bills pile up. And then one day they find themselves wondering why they ever loved this person in the first place. Instead of being sexy and interesting they're just part of a routine. TLDR: Diversify your interests and activities to be happy. Don't rely on a single person, hobby, or commitment to give you everything you need.

Social media can consume your life. It’s not all real, and not everyone posting pictures is having a great time, and not every “I LOVE YOU SO MUCH WE SHOULD CATCH UP” is genuine.

To appreciate their youth.

That being a parent is not always "the most rewarding thing in the world".

Pulling out is not an effective method for birth control.

That nobody will be a better advocate for you than yourself. Especially when it comes to your health. Mental AND physical health. Don't wait for somebody else to do it. You'll have to do it yourself eventually.

There aren't actually any hot singles in your area.

You are your biggest limitation.

That they are terrible at parenting.

To protect their ears, you don't want to live with tinnitus for the rest of your life because you were exposed to a loud noise once

That most people will just help you, how and if they can, if you are honest with them It seems like so many people feel the need to conceal what they actually want from you, and try to get it by presenting a half-truth or what they think you want to hear instead of just being straight forward.