Letters of Madam Guyon
There are two methods of serving little children. One is, to give them all they want for present pleasure. Another is, to deny them present pleasure for greater good. God is a wise Father, and chooses the best way to conduct his children.
A sad exterior is more sure to repel than attract to piety. It is necessary to serve God, with a certain joyousness of spirit, with a freedom and openness, which renders it manifest that his yoke is easy; that it is neither a burden nor inconvenience.
If you would please God, be useful to others, and happy yourself, you must renounce this melancholy disposition. It is better to divert your mind with innocent recreations, than to nourish melancholy.