SimchaMinute by Rabbi Avigdor Miller
The earthiness of man’s materialism is heavy. You have to lift up your 160 pounds, whatever it is, out of bed, and convey it to the beis haknesses. So what is the trait of character that we see here? That’s the self control of zerizus, forcing yourself to do something. Of course, when you do this you’re happy...
The happiness results from overcoming the inertia of that lazy animal on which you ride during your lifetime. – Ideal Marriage, Tikun Olam (#684)