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If your twenties were about figuring it out as you go, well, we’ve got news for you: Your thirties are still about that. Luckily, you’ve learned a few things along the way. Here are nine notions you should feel confident kicking to the curb now that you are wise enough to know how.

Parachute Sheets

1. Getting Less Than Seven Hours of Sleep

Seven--or heck, eight--hours of continuous, uninterrupted sleep is not only one of life’s greatest pleasures, it’s one of life’s greatest necessities. Of course, we can’t always make this a reality (2-year-olds who wake up at 4:30 a.m. come into the picture), but at least we’ve finally learned to leave the bar before 2 a.m. Honestly, nothing good happens after cocktail number five.

2. The Idea That There are Actual “Grown-Ups”

There are no grown-ups. We suspected this when were younger, but as New York Times writer Pamela Druckerman once wrote, “…it can only be confirmed once we are the ones writing books and attending parent-teacher conferences.” No one really knows the correct way to go about being an adult. Everyone is winging it—some just do it with more confidence.

3. Conforming to the Water-Cooler Crowd

Jerry Seinfeld once said that his favorite part of the Emmy Awards was when the comedy writers took the stage to claim their prize. “You see these gnome-like cretins, just kind of all misshapen. And I go, ‘This is me. This is who I am. That’s my group.’” By the time you’re in your thirties, you stop caring about other groups. You just want to be with your people, the ones who make you feel like the best version of yourself.

Anine Bing

4. Saying Yes to Everything

Boundaries are about self-preservation, not alienation. It’s OK to say no, as long as you learn the art of doing it gracefully.

5. Apologizing When You Didn’t Do Anything Wrong

The same goes for apologizing. It doesn’t help your confidence to admit wrongdoing every time you feel uncomfortable. It’s OK for people to be upset. It doesn’t mean that you should overcompensate for their feelings.

6. Worrying About the Table Settings

At the end of the day, you’re never going to remember whether the house was spotless or if the dishes were from Mackenzie-Childs or Target. All that matters is the company you keep.

Cuyana Bali

7. Neglecting Your Savings

Let’s face it: Biking through Norway is never going to happen without a solid nest egg. Whether it’s your 401(k) or the savings account you’ve had since birth, it’s time you checked in to make sure that you’re treating it with the same love and care you treat that Schwinn Rocket 2.

8. Elephants in the Room

Having the tough conversation is ultimately better than living with the energy-sapping resentment or misunderstanding. Learn to be a grown-up (yes, they do exist in this sense) and take the high road. It will also help you with getting to those seven hours of sleep.

9. Trying On Bathing Suits in the Store

This is the very reason online shopping was created. And there’s a reason your bedroom does not have fluorescent lighting.

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