There are sacrifices involved. While you don’t have to sacrifice all of everything, you will have to sacrifice a lot. Never forget that. Never pretend that it comes easy. Never envy or hate those who have done it or proclaim that it was so much easier for them if you are struggling. It’s difficult. It’s grueling. Sometimes, it seems like the most difficult endeavor you have ever begun. But you are not alone and it can be done. Failure isn't falling down. It's remaining where you've fallen.