I am always surprised when I finish a “pomodoro”, those 25-minute working sessions. I always feel a great sense of accomplishment in my productivity, and it spurs me on to do more. It is a positive cycle, and it is reinforced each time I do one of these productive sessions.
It may also be the start of finding a source of meaning in life. After all, if work can be a pleasure, then perhaps we are onto something here.
I would strongly recommend the pomodoro technique.