According to the Pali Cannon, Gutama Buddha said:
Possessed of two things in this very life, one lives in much ease and happiness, firmly directed towards the ending of the defilements. What two? Being thrilled by enthusiasm at the time for enthusiasm, and making a firm effort.
I think this should be tied directly into this: The Seven Points of Practice
I think at times I grimly approach my practice like it is a chore. Other noteworthy bloggers have seemed to be going through the same thing. This is a rough cycle for me that will likely go around in circles until I am ready to break it. I think I am able to step out of it for longer and longer periods of time, But then there are those days... But today is not one of them!