Advice from a friend

I was talking to a friend from NIE the other day on the train back home. He is Omar, a Chinese Muslim who has been married for quite some time. At 40 years old, I reckon he has got some sound advice for a novice like me. What he said set me thinking yet again.

Omar: You know, what will be yours will be yours. If something is not yours, no matter how much you struggle, it will never be yours.

I would love to agree with him but I am unsure. Somehow, in my heart, I do not know whether I can fully place my trust in fate. I mean, does FATE even exist?