All hard work has to go with a little bit of playtime. The harder you work, the harder you are allowed to play.
At the end your work will pay off and you can play all you want. So remember, keep your mind focused and yourself motivated when you are working, but as soon as you rest or take a break, learn to let go of the work that still needs to be done.
Go ahead and let loose, forget and enjoy. The one golden rule: First you work then you play.