Desire

             Recently I find myself often stuck in the situation that repeatedly doing the things I hope I didn't do: little things, but always let desire takes over my brain, such as I would have been studying at that moment but I  didn't; I would have eaten healthier food but I didn't; I would have been sleeping, or awake, but always did the opposite. Then I'm thinking about why people can not perfectly control themselves. Obviously we know what is right; what is wrong, and more importantly what is good for ourselves, but we just can not do it.
             When I talked this to a really tough person, I mean really persistent and outstanding, he answered me:" this is the mankind, but before you take the action, ask yourself if it helps you to achieve your goal. If you have a strong and determined mind towards that, you will find yourself regretful after this. Since you will take the double suffering, time and emotion, after letting the desire to make your choice, you'd better calm down and make a wiser choice."
             However, to a personal degree, I believe there's no right or wrong answer to this. It all depends on one's life choice, and mankind's choice is open and flexible. Different phases we are in we have to change ourselves to adapt to it. 
             This also reminds me of my researching experience on 2008 Financial Crisis. One of the high frequent thing I read was mankind's imperfection, according to Keynes, the animal spirits. In a mathematical sense, market is a game: there's winners and there's losers. But if the game of the free market could be played by perfect rational people with perfect information, then it would be possible for there only to be winners. However markets are made of self-interested human beings. As long as there's the desire driving force, there's the mistakes. "If the trouble with socialism is socialism, the trouble with capitalism is capitalism."-The Great Game