We have the slow gene in our house. My ds has it, slow for walking, or whenever his brain says to slow down. Sometimes he's very fast. Sometimes, timed tasks in particular, he's like molasses in January in the arctic. My mom used to complain about my father 'taking his time' with things. And then she would say the same about me...and also that I was too relaxed. Ha.
What do I think helps me? Clocks, watches, now that I've learned to read/bother to look at them. Growing up helped. Now I can be really really really fast at stuff, especially if I like the work. And generally don't think of myself as slow at all.
This also helped me see all this slowness in a better light.
http://www.neurolearning.com/nagc2004.pdf 
