Here is a link to a helpful article by Jon Bloom, over at Desiring God, called "Laziness Ruins Happiness." Don't be lazy. Take some time to listen to it or read it.
A few quotes:
diligence is a “heavenly virtue” because it is a means of cultivating godliness — increased capacities to deeply delight in God and his gifts.
how we behave, over time, reflects what we believe; what we do reflects what we desire; our labors reflect our loves.
When Scripture commands us to “be all the more diligent” (2 Peter 1:10), God is calling us to work hard toward the right ends (growing in godliness), in the right ways (what God commands), for the right reasons (love).
