—M. Ta'anit, 4:8 (quotation from Proverbs 31:30)
Today is Tu B'Av, the fifteenth day of the month of Av. It is a minor holiday whose theme is love. Some have called it the "Jewish Valentine's Day."
There are no mitzvot associated with this day–nothing you are required to do, nothing from which you are required to abstain. It's just a day for love and joy.
Do something intentional today to make yourself a little bit extra joyful. Put on some clothes that make you happy. Get a massage. Give your loved ones an extra kiss. Make yourself happy for your own sake, for the sake of those around you, and for the sake of God and the world.