Every person has a goal of his own. Which he also tries his best to fulfill. But to achieve that goal, we also have austerity behind it. It is believed that if you achieve your goal easily, then you can be successful. But cannot reach the summit.
You just have to do penance for a short time to achieve your goals, then there will be no problem for the rest of your life. If you are a student, then the initial time is painful according to you, but when they achieve their goal, then all the happiness in life is with them. And one who does not fall in the entanglement of materialistic things, it is easy for them to achieve success.
If you have bad habits within you, then they can become a hindrance in your path of success. Try to keep distance from these habits, or else it is to say that sacrificing them only makes your path to success easier.
The spirit of sacrifice should always be for the benefit of others and not for one's own benefit. A sacrifice made for one's own benefit is not called renunciation, it becomes selfishness.
In this run-of-the-mill life, no one has any feeling of sacrifice for anyone. But in today's time, if any person has the spirit of sacrifice for the benefit of others, then in the present time he will be called great. And from such a few individuals become instruments for the welfare of the society, the country and the world.
Try in life that your needs are work because the more your needs work, the more you will be happy. Sacrificing our needs makes our future even better.