Always remember, joy is not incidental to spiritual quest. It is vital.
Thinking is more precious than all five senses.
When a man is able to take abuse with a smile, he is worthy to become a leader.
It is a great mitzvah to be happy always.
A mitzvah that costs money is worth more than one that costs nothing.
Even if you can't sing well, sing. Sing to yourself. Sing in the privacy of your home. But sing.