Rabbi Simcha Zissel of Kelm (19th century Europe) wrote: "Some people mistakenly think that to follow the path of the Torah one must reject everything worldly. They are under the misconception that one must live a life of suffering and deprivation, and be submissive to others. This is not the Torah's path which is referred to as "a tree of life" (Proverbs 3:18). The verse (Proverbs 3:17) tells us: "Her ways are ways of pleasantness." The Torah's path is a path of joy, as it says (Proverbs 15:15): "The person with a good heart (Torah ideals) has a continual feast."
If someone is living what appears to be a Torah way of life and is not experiencing a path of joy, there is something wrong with that person's attitude.
Wouldn't it be wonderful if everyone in the world would live a life of joy? Remember: By increasing your personal level of joy today, the total level of joy in the world will be increased!
(see Chochmah Umussar, vol.2, p.190; cited in Gateway to Happiness, p.24)