Today there is overtime over 23:30 with my colleague, we work two difficult thing that my goal is report of month and his task is analysis of increasing rate. Although it is not easy to work, i also feel challenge and happiness. If people is not obliged, you will not find yourself so excellent. There are two mind in my heart. First, use more thought about it then I can get success. Second, more challenges more knowledge.
Overtime is not promoted, but it can show one positive and passion.