Dear Sir / Madam, I'm interested in my job & I like what I'm doing . . there is so much to learn in my work (Finance Dept) . But , I don't understand why I'm doing mistakes most of times in my work . . My manager is happy with my work except doing mistakes. . (Like updating wrong date , total mistake while reconciling accounts, etc) People say that if I avoid doing mistakes I can be even more effective . . (considering this is negative habit) I always check my work before sending to customers . . While checking I don't find any mistakes but I really don't know how they find mistakes in my work . . i really feel very bad . . . I'm doing mistakes as much as I'm avoiding and I really really want to stop this habit . . Pls suggest me how can I avoid mistakes and to be even more productive ?