When giving the Bnei Israel their final instruction before they were to leave Egypt, Hashem says that they should eat the Pascal Lamb: וְכָכָה תֹּאכְלוּ אֹתוֹ מָתְנֵיכֶם חֲגֻרִים נַעֲלֵיכֶם בְּרַגְלֵיכֶם וּמַקֶּלְכֶם בְּיֶדְכֶם, “So shall you eat it, your loins girded, your shoes on your feet, and your staff in your hand…”. (Ex. 12,11)
Obviously, Hashem wanted the people to be ready as soon as they were given the word that they must leave Egypt. The important message here is that when you know you have a task before you, do not procrastinate but be prepared. Do not delay and feel there is plenty of time. No, there is not plenty of time. What you know you have to do later, do it as soon as you are able.
It is very disturbing, and sometimes disrespectful, for people to come late for an appointment. It is certainly improper to come late to Shul. It is not advisable for students to delay doing homework or workers to leave for later what they know must be done.
I don’t know if it is still among the stories that children read in school but I remember when I was in the early grades we read a story about a race between the Tortoise and the Hare. In the middle of the race the hare who was obviously leading stopped to rest and the turtle who kept plugging away actually won the race. The point is, do what you have to do and rest later.