To qualify to get your CPP early, you basically have to meet two key criteria. The first is you must be over the age of 60. The second is you must have made at least one valid contribution into Canada Pension Plan.
"For people that aren't at all aware of what College Pro Painters is, the basic idea is that students make money by running their own small painting business in the summer. The theory is that they hire other students, make use of the CPP brand name, resources, and training, then go about making great profits over the course of a summer."
While it would be nice to get the maximum from the government for retirement, not everyone does. So how much will the government pay you in retirement?