What are the most frequently made mistakes that lead to the fact that the implementation of time billing software offers results that are opposite to those planned?

Nowadays there are improvingly people, who complain about lack of time. It is indicated by the fact that, firstly, we want to make as much as possible. That’s the reason why, we tend to find it hard to set up some hierarchy, which we would like to follow in order to obtain as much satisfaction as possible. Moreover, another meaningful problem a variety of people complain about refers to wasting of time, which is very easily done for instance in front of the computer.