One step, one breath, one movement of brush

I would like to ask why sometimes things seem to be bigger than ourselves, then our forces and energies. Sometimes they are somewhere outside, sometimes they just occupi the whole living room and they look so huge to us: thoughts, things to be done, things to be tidied, situations to consider, email keeping going through our head.
Other times, we just start trying to do one piece at a time, one step at a time. As in "Momo" by Michael Ende, the long big road will never be cleaned if you consider it in its completeness, but it will be cleaned if you just focus on every step, "a step, a breath, a movement of the brush; a step, a breath, a movement of the brush"...
And so, at the end, when you sit down after having reached your little goal, you find out that the living room is empty, or tided, and that your mind is happier, and more satisfied of having considered all available possibilities.
And it seems, things just solve by themselves. Your effort was much tinier than expected. And you could even go on, one step, one breath...