everything happens for the best,”my mother said whenever I f

everything happens for the best,”my mother said whenever I faced disappointment."If you can carry on,one day something good will happen.And you'll rea1ize that it wouldn't have happened if not for that previous disappointment."
Mother was right,as I discovered after graduating from co11ege in 1932.I had decided to try for a job in radio,then work my way up to sports amouncer.I hitchhiked to Chicago and knocked on the door of every station-and got turned down every time.
In one studio,a kind lady told me that big stations couldn't risk hiring inexperienced person-"Go out in the sticks and find a small station that ‘ll give you a chance,”she said.
I thumbed home to Dixon,Illinois.While them was no radio-announcing jobs in Dixon,my father sad Montgomery Ward had opened a store and wanted a loca1 athlete to manage its sports department.Since Dixon was where I had played high school football,I applied.The job sounded just right for me.But I wasn't hired.
My disappointment must have shown."Everything happens for the best," Mom reminded me.Dad offered me the car to job hunt.I tried WOC Radio in Davenport,Iowa.The program director,a wonderful Scotsman named Peter MacArthur,told me they had already hired an announcer.
As I left his office,my frustration boiled over.I asked a1oud,"How can a fellow get to be a sport announcer if he can't get a job in a radio station?"
I was waiting for the elevator when I heard MacArthur calling,"What was that you said about sports?Do you know anything about footba11?"Then he stood me before a microphone and asked me to broadcast an imaginary game.
On my way home,as I have many times since,I thought of my mother's words:"if you carry on,one day something good will happen.Something wouldn't have happened if not for that previous disappointment" I often wonder what direction my life might have taken if I’d gotten the job at Montgomery Ward.
这篇文章的主旨是什么?
我看不太懂 主人公最后怎么样了?有得到工作吗?又有什么感悟?
请看懂的人回答一下 不要用在线翻译

主旨：如果你执着追求,美好的事物总有一天会到来.
主人公最后得到了工作,asked me to broadcast an imaginary game,工作是去广播一个想象的比赛.他的感悟是做事情不要怕挫折,要勇往直前,总有一天理想会实现.如果没有先前的令你沮丧受挫败的事情,就不会发生后来那些美好的事情.