There is great Chinese saying goes that a giant dam of thousand miles can collapses due to an ant hole, a thick ice of many meters can't be created by the freezing weather in one day. Everyone does a lot of things everyday. Some are hard to do, the others can be easy. In that case, we usually make some little changes in our life. We slowly get into some habits of doing some certain things. Some are beneficial for ourselves, the others damage our life. You have migght experienced the same experience. We often tend to give up some hard things which requrie us to make more efforts, such as learning English. On the contrary, we really like to do some things which only requrie us time, such as drinking. As a consequence, a good job or a bad healthy condition depends on the decesion you have made before. We often want to get bebefits from one thing right now. We don't have enough patience to do a thing that benefits us very later.