Dopamine

It can cause harm

It can be beneficial for you 

The way you use it, 

The way it will affect on you 

If you have it too much it will cause you bad 

Depending upon the work 

That you will be doing at that time 

You should be alert of it 

The way it can harm you

Is like a tiger hiding in dry grass and standing behind you 

If you don't have it 

You won't be called a human 

Maybe you can be called a robotic human 

You can be mistaken that it is something from your heart 

But no, it's something from your brain 

Known as dopamine, you could be addictive to