do we have a RIGHT to CRY??

We often keep crying for somethin or another in our life...We almost spends 90% of our life cryin for all what we dont have..N even our tears overcome our smiles..N we r not able to express our happiness completely atleast when we r happy..N even are not able to feel happy ourselves...Because hum log apni hi duniya ki problems main fase rehte hai, agar hum bahar ja kar auro ki problems dekhenge  to..We'll find that our problems are nothing..Here is a small experience of one of my friends..Which taught me that we dont have any right to cry....

She once went to a slum area for some survey as a part of her college assignment...The slum we all know how it is..We people just cant stand over there..Its so filthy n unhygienic...There she went inside one jhuggi..It was a small room of almost 8*6..N it was their bedroom cum kitchen cum everything...No furniture, no almirah, nothin other than a single mat over which they all sleep..They were sooo poor..The family consisted of 1 man n his 2 children..Even her wife was not there...Its really bad to see people living like this..My friend entered inside n said namaste..The man was shocked n happy to see someone like this to come to their jhuggi..He was expectin her to be some govt servant for their help..But she was there for her work..The man put a bucket upside down for her to sit..Even when she was ready to sit on floor..N the man asked her for tea..N was calling her betti..N most important the man had courage to smile..N his smile taught my friend if people have courage to smile in such unwanted  conditions..than why do we cry??N if we cry we are doing injustice to such people..Because ours condition is much more better than those people..

So, do we a have right to cry???