“so am in a really toxic household and with a narcissist single parent mom it is really difficult to stay positive and focused on my studies .....help me”

Another soul answered...

I understand that it is difficult to stay positive, I am happy that your sharing your thoughts here, what I can say is try harder and focus on how to build a financially strong career that you don't need to be depended on anyone if your try and persuade your mom then try to understand her,there might be a reason why she behaves in such way if not then move out once your an adult and build a life that makes you happy which you've always wanted but remember one thing if there is a situation that you need to take care of her please do because now she can be narcissitic but there would have been a time where she would have love you unconditionally .