Reason and Exertion

As anyone can confirm from their own experience, the immediate correction to Complacency is Exertion, a self-evident, though unprovably voluntary cause of a modification of ongoing behavior.  Furthermore, Exertion can lift one out of suicidal depression, can initiate a more industrious means to raising some money than defrauding someone with a false promise, or can spur one to help another in need.  In other words, Exertion evinces all the characteristics that Kant attributes to Pure Practical Reason, except one--that it is determined by his Principle of Pure Practical Reason.  So, either Exertion is a non-Rational volition, or else it is an expression of a Reason the Principle of which is other than Kant's.  An example of the latter has been introduced here--Progressive Reason--the Principle of which can be formulated as 'Try to ameliorate given conditions as much as possible', but which would likely hold little interest for Kant insofar as one of his ambitions is to conform Rational Ethics to conventional Deontological Morality.