If there was a significant event that happened to Riyaz on January 16, 2003, the reason for it would depend on the specific details and circumstances of the event. Without further information, it is impossible for me to provide a specific reason for why Riyaz's life changed dramatically on that date.
If you have more context or details about the event or situation, I'd be happy to try and help you understand the reasons behind the change in Riyaz's life. Alternatively, if you have any other questions or need assistance with a different topic, feel free to ask!