Once upon a time there was a donkey that was tasked by his master to carry a load of cotton from one bank of the river to the other bank. During the day time the water level in the river is pretty low till ankle level. However, around sunset the water level comes up to hip level. The Donkey was happily playing all the while during the day and started crossing the river after sunset. The load of cotton grew multiple times heavier as the cotton got soaked in the water. With hard difficulty and pain the donkey crossed the river. Not just that, the donkey also got beatings from its master for making the cotton wet!!!
Morale of the Story : It is much much easier to do things at the right time and when you miss, it becomes exponentially tougher, frustrating and miserable.