First of all, you are self-motivated ~
Second, you are single-minded. No matter how she treats you, you love her wholeheartedly (I don't know the truth, but I think so from what you said above).
I think what she said does have some truth. You really don't live in the same world. You may have different values and outlook on life, but that doesn't mean you can't be from the same world ~
I think a man will give full play to his potential for the woman he loves ~
As long as you have the heart and want to do it, I think it is not difficult to achieve "upper class" ~ ~
The point is that you should let her see your momentum and your future ~
Don't let her see your inferiority in front of her ~ ~
You should firmly believe that your future is bright!
Finally, do you think it's worth fighting for her?
There's a question I don't understand. If she leaves, won't you fight like this all your life?
Struggle, not for her, but for yourself. I think if you can let her see that you are not fighting for chasing her or keeping her, but fighting for your future, she will not only have special respect for you, but even have a sense of crisis, so that she will be more considerate and concerned about you ~ ~
In short, what you need now is progress, no matter how small it is ~
Set an easy goal first and experience the joy of achieving it ~
I believe it can inspire you to move forward ~ ~ ~
Finally, I wish you success!