you can t have a better tomorrow if you don t stop thinking about yesterday. 如果你无法忘掉昨天，就不会有一个更好的明天。consider things from every angle.思考问题要全面。energy and persistence conquer all things。，never put off what you can do today until tomorrow.今日事今日毕！keep trying no matter how hard it seems. it will get easie...
