because we as humans have a lot of wills that always feel lacking. Sometimes, we think that our plan is perfect and it will go very well. however, the performance of nature is not like that. There will definitely always be obstacles and various problems that come to us when we are trying to do something. I think, because there really is nothing easy in this world, so we have to work extra hard to be able to make it happen. not to mention that there are several factors from anywhere that make us things that might hinder us. And not everyone can be patient and able to go through all the problems and obstacles. So that sometimes it seems very difficult and finally gives up. but not all of them are like that, because many are successful when their efforts are indeed extraordinary, their consistency and their efforts.