How to focus your mind on the work

Focus on your work and do not think about their result because the result is not in your hand. This is the key to success or solution of every problem of your life.
Try to apply this thing in your life and one day definitely you get success in your life. This is called "Rule of Karma of the Life.
If you expect anything with your work then you never focus on your work and just thinking about the result. So, keep calm and focus on your work. I know this is not easy for you but try it at least once in your life. You definitely saw something good change in your life.
Shree Krishna Govind Hare Murari, Hay Nath Narayan Vasudeva.