Just do it, even when you feel lazy and you don't want to

 Anything that must yet be done, virtue can do with courage and promptness. For anyone would call it a sign of foolishness for one to undertake a task with a lazy and begrudging spirit, or to push the body in one direction and the mind in another, to be torn apart by wildly divergent impulses.

-- Seneca, Moral Letters, 31.b-32

Quality is b=much better than quantity...one home run is much better than two doubles. -- Steve Jobs 

* Source: The Daily Stoic by Ryan Holiday and Stephen Hanselman