Kotowaza of the day: Get around to it

Japanese:

思い立ったが吉日

Romanized:

Omoitatta ga kichinichi

Meaning of Japanese:

The best day for action is the day of decision
Work on a project should begin the day it is conceived

English equivalents:

Never put off till tomorrow what may be done today
There is no better time than the present
Strike while the iron is hot