Sometimes we spend a lot of time doing some boring work. In most cases this kind of work can be done much quicker than we actually spend time on it.
There are a lot of reasons why behave like this. In many cases we are victims of procrastination - the most famous thief of time. Sometimes we simply do not know how to do something fast (e.g typing text without looking at the keyboard), sometimes we do fall into the perfectionism problem.
And finally, how to do things faster?
Firstly, you have to define the reason why you doing something slowly.
Secondly, you have to choose an appropriate method to improve your performance:
And at last, you have to constantly look after your work and do not allow yourself to do it inadmissibly slowly.