when do I pay cpp on earnings if i`m already collecting cpp.

So many young people are worried about "getting stuck in a job they hate". I say, "tackle every job with enthusiasm!". Your first few jobs likely won`t be what you`ll do for a career but they`ll be invaluable in your learning about work, handling employers, the public, fellow employees etc. Keep your chin up. Most people your age don`t worry about what you`re worrying about. You`re years ahead of the pack and you`re success in life will prove it.! All the best to you...