[dmfdmf]

I think routine is important. If you launch the same routine before sitting down to get to work then you can use the routine to get rolling even if you don't actually feel like. Also, the mind is inherently lazy. (Unfortunately "lazy" is the closest word we have, but it does not capture the emotion/state of dismotivation). In any case, you have to consciously choose to focus and ignore any self-generated distractions (I should check my email again) or false fatigue that will fade in 5 minutes once you start working.