Writing each step you do on paper, while doing it: +8. This helps me when I can't concentrate, when I'm distracted.
I simply write what I'm doing (the current step, or the next step), on paper. If for a step (which I have already written on paper), I find that I must first do a sub-step, then I write the sub-step. The result is a log of what I've done and what I'm doing.
The great advantage of this is that if I get distracted, I can return to just where I left off, by just reading the last line or the last few lines I written on paper.