Psalm 1:2-3

But his delight is in the law of the Lord; and in his law doth he meditates day and night.  And he shall be like a tree planted by the rivers of water, that bringeth forth his fruit in his season; his leaf also shall not wither; and whatsoever he doeth shall prosper.  

 If we see a reward for the time spent in the word, then spending the time becomes easier.  Sin always tries to tell us that a shortcut will work better.  Sin’s alternative never does, and it brings disappointment.  However, when we treasure the law of the Lord and meditate on it and watch the prosperity come into our lives as our tree of faith grows, then the work seems like nothing at all.