This is what happened to poor Susan. Her eyes were brimming with tears. School was reopening the next day and her holiday homework remained incomplete. Susan had no one but herself to blame. I am sure you remember the time when you said, I will do it tomorrow and that tomorrow invariably became too late for comfort.
Procrastination is the word to describe such behaviour.
It means to put off or delay. Procrastination at one time or the other has plagued us all. For some, it is a chronic problem. Others find that it affects only some areas of their life. You cannot dismiss procrastination as an innocent delay.