Values are the main factor that you choose not to be with her (I am talking about her values unilaterally, not boys);
If she wants something for nothing, you can just break up. No matter how hard you try, you can't meet her material needs.
If she is a hard-working girl and wants to live a happy life by her own efforts, she can continue, but it doesn't mean that she can be together in the end, because it depends on your ability. Your efforts have been seen by others, and girls are not used to boys who are not motivated. This is absolute.
It doesn't matter if your income levels are not much different and you both work hard. You just need to work hard to change and improve your taste. If it is very big, there is only one possibility at present, she has a high income and you have a low income (otherwise you wouldn't ask this question), then I think you can work hard. If you can't feed her, I think you are delaying others. It is better to see a beautiful flower from a distance than to destroy it in your own hands.
In the last sentence, China has a saying that it is right to be suitable for each other, which is very important in marriage. Think about yourself.
Old boys's answer is a struggle after five years of marriage.