Keep Smiling because nothing is permanent.

 Stay Strong because no one cares

We care too much while the other person does not care at all 

 Life is unpredictable and one is unsure for it.

 No one takes responsibility for their actions these days

 Memories fade gradually

 No matter how much we care for others, it all goes vain one day. 

 Humans change very fast  

 Emotions changes very fast

 Life has phases