How do you manage to keep a level head when your parents are trying to tell you you're not worth a thing?

Maybe try to remember that what they say about you is more about them than it is about you. Your goal can be to gain an independent self-image which relies on your own experiences and not their opinion.

Challenge their words in your head. If they tell you you're not worth living, then think about all the reasons why you're worth living, because trust me, you are worth living! if it helps, you can write it on your phone too so whenever you feel discouraged by them or anyone else, just take your phone out and read through it.

Demonstrate in every single way that i'm worth ! Starting to show them what i am capable of,and how good i can handle everything on my own.

It's important to make sure you don't feel the same way, because you're amazing and you are worth the entire world.

You just have to stay optimistic and positive. I know that it is a hard thing to do but you have to try. You have to remember that you are a great person who can and will do great things in the world!

I'll study hard and be the TOP at everything. So they'll change their mind about me. Nothing can stop you if you dont help yourself. Be confident! Nobody can tell you what you can be !

Well, I would remain calm in order to not make the situation any worse. Getting angry only creates more tension and doesn't help to solve the argument. Don't let them know they are getting to you and this will be a motive to continue. Parents like to be right, don't forget that. They just want what is best for you so don't think it's because they're against you. Take deep breaths! Don't forget. Remember: YOU ARE WORTH A THING. Your opinion of yourself, matters more than anyone elses :)

Value comes from within, so comments made from other people are merely a helpful or a wasteful distraction.

The understanding that you have your life in your hands regardless of parents...at the end of the day its your choice to be successful and through being successful is where your parents will ne dumbfounded we all know that in the end the tables always turn as we age ¿?

Probably because It's you who define what you're worth in this world, your parents did what they had to do, they brought you to life and raised you, now its up to you to make something out of it, something out of yourself. Plus I frankly think they only tell you're worthless to shake your nerves and get you to go do something about it and progress.