Whenever I want to stop, there is always such a sentence to inspire myself.
There is a passage in "Dear Andre", "My child, I ask you to study hard, not because I want you to compare your grades with others, but because I hope you will have the right to choose in the future. Time work, not forced to make a living. When your work has meaning in your heart, you have a sense of accomplishment. When your work gives you time and does not deprive you of your life, you have dignity. A sense of accomplishment and dignity. Will give you happiness."
Efforts will never go wrong, even if it is to have the capital for negotiation in the future.