Easy Distracted, or the Most/Least Successful Thing

I prefer to think that the most successful work is going to be written in future, and I don’t have any for now. All of my writings start like they are future disasters. I can’t decide what the topic I should write about. Then I can’t “create” a worthwhile introduction. I get distracted all the time. In the middle of the writing I feel inexpugnable desire to check my mail, or new comments on Facebook, or suddenly I need to eat something… So how am I supposed to write something successful in such unhealthy conditions? J