You cannot b defeated untill u leave to endeavour.
dost success and failure are two sides are are of a coin .
if you did not get succeed in 3 attempts , it doesnot mean u cannt succeed in subsequent attempts,
Take example of eminent scientist Adison , he did more than thousand efforts to invent electricity.
In an interview he said i hv found 1000 ways by which electricity cannt be produced.
So always be optimistic and keep trying but ur efforts must b with improvements , find out ur lacunas ,
where u lack in and then collect ur courage and get enthusiastic to make it ur last attempt.
Dost yeh to life ki starting hai itne me ghabra jayega to aage kaise life to face karega.
Let the difficulty know u , u r more tougher.
At last ,I want to say BIG"BEST OF LUCK FOR UR CAREER AND UR FORTHCOMING LIFE"
bye and take care