When learning to manage time, it is important to reward yourself for accomplishing goals.

That statement is true

When we put ourselves on restrictive schedule, the amount of stress that we felt could be easily accumulated and might expose us to a certain health and mental risks. Because of this, it is important for us to reward ourselves once we accomplish a certain goal, in order to bring down our stress level and make us able to continue the schedule for a long period of time.

it all depends on how long the hours are. i think they wouldn't approve of it. in my opinion.