I think the hard part is that unpredictable work has to be done more with discipline. Predictable work often originates from external requirements, and the exte

I think the hard part is that unpredictable work has to be done more with discipline. Predictable work often originates from external requirements, and the external interest to the work gives you motivation. However, unpredictable work requires more intrinsic motivation (or discipline), as there is no external interest until you get some results.