What is dream??

Everyone has a dream to be pursued...But sometimes when u put the highest expectation in ur dream, if u fail, it'll be definitely hurted...The dreams that u have will always make u face difficulties and it's going to cost u a lot...maybe the dream is easy for u to achieve, but because of so afraid of failing, we tend to lose strength and confidence in pursueing...It's going to be very hard this round, should i go and just give up?? I am so stress now...everyone has different things in life to think about, but what i am thinking now is just all about that interview...i got to learn how to let go right now...i can't hold on too tight....GOd...help me....Help me to learn how to breathe within such circumstances...