This week, Twitter gave birth to the trending hashtag of #HighschoolTaughtMe. And while I'm not in high school anymore, the tweets and discussion about this topic truly took me back to a place where I learned a lot of life's most important lessons.

1. Quality over quantity:

Sometimes, all you really ever need is a couple of people who you know will always have your back.

2. Never change who you are:

You should never change who you are in order to please others- especially since it's impossible to be perfect.

3. Not everyone will always be kind:

People are not going to follow the old motto of "treat others as you would like to be treated." It's easier to make it through the days when you understand that, unfortunately, the world will often treat you worse than you treat it.

4. Daily interaction works wonders:

Once the daily interactions of high school are gone, so too may be much of the friendship.

5. The unforgettable:

Because what else do we remember about high school biology?

6. That grades aren't necessarily good measure:

It's easy to compare grades to intelligence, but it's important to remember that grading systems are a series of checklists, and nothing more.

7. And neither is popularity:

The concept of cliques and "popularity" truly is a high school notion that ceases to exist after graduation.

8. Time doesn't mean much:

Sometimes having old friends who you have known for years can be comforting, but sometimes it can be deceiving. Don't discount people simply because they're new to the picture.

9. "Coolness" isn't a very accurate measurement either:

Sometimes the coolest people you'll meet are the ones you'd never expect. Give everyone a chance.

10. However, realness is.

You can always trust the ones who stick by you through thick and thin, because they're the realest.

11. It isn't like the movies:

You probably won't end up being with the captain of the basketball team.

12. Being late can have perks:

If you're going to be late, you may as well milk it to the max for your own benefit.

13. And getting ready can be oh so easy:

Contrary to popular belief, it is actually possible to get ready quickly, even at record times.

14. That you can do any assignment at the last minute:

I made it through high school (barely) by procrastinating until I hit a wall of motivation right before assignments were due. And while this method isn't recommended, it always somehow seemed to work out.

15. Most importantly, that the only person you need to please is yourself.

There really is only one person that you need to worry about, as other people, especially in high school, really do not matter in the grand scheme of things.

Don't worry so much about what others think- chances are, you'll never have to see or interact with many of them again. You are the only thing that matters; work on pleasing nobody but yourself.