No pain, no gain

In this era, MATERIALISTIC is very commonly used to describe human being. 

No surprisingly, I will shout at anyone of you, "Yes, I am materialistic, so what?".

I pay for what I achieved! No pain, no gain! I lost something in order to success!

Please bear in mind that nothing can be successfully done without any HARD WORK or SACRIFICATION.

Alright, my body systems are begging me to sleep!

Night, world!!