Answer:
1. The purpose of living life.
2. According to me it means when you are aware of your purpose to liv life then you can endure almost anything and you won't feel useless enough to give up.
3. In my perspective this quote relates to the education I receive from school. It can get really difficult and pressuring and it makes you want to give up however when you know the purpose you have is to have your own career in addition to building a life for yourself with a good earning then I can tolerate enduring the pressure that comes with it because It is worth it as I am aware about my purpose.