Whenever you want to achieve something, keep your eyes open, concentrate and make sure you know exactly what it is you want. No one can hit their target with their eyes closed.
– Paulo Coelho
Focusing is about saying No.
– Steve Jobs
No one has time to do more than a very few things well before he is twenty, and when we force a boy to be a mediocrity in a dozen subjects we destroy his standards, perhaps for life.
– C.S. Lewis