Purpose in Life

In his book, "At The Crossroads," Charlie Peacock quotes John Henry Newman as saying,

God has created me to do Him some service; He has committed some work to me which He has not committed to another. I have my mission. Therefore I
will trust Him. Whatever, wherever I am, I can never be thrown away. If I am in sickness, my sickness may serve Him; in perplexity, my perplexity may serve Him; if I am in sorrow, my sorrow may serve Him. My sickness, or perplexity, or sorrow may be necessary causes of some great end, which is quite beyond us. He does nothing in vain.