Small things are more feasible than the big things. It is easier for me to write a small post than to write an essay.
Small things are regular because they are more feasible. It is easier for me to write a blogpost daily than to write an essay every week.
Small things compound because they are regular. In the long run, a daily writing habit makes you a better writer than writing a long article on occasion.
The big things often distract you from the small things that you can do in the here and the now.