Prayer: at 3 O'clock each Friday afternoon pray the Sorrowful Mysteries of the Holy Rosary of the Blessed Virgin Mary. If you can't manage to pray at 3pm, Just say the Holy Rosary whenever you can.
Fasting: the present norms for fasting suggest that we eat no more than one full meal, as well as tow smaller meals that together are not equal to a full meal. It is also permissible to attempt a strict fast. A penitent's age and health should always be take into consideration before fasting.
Almsgiving: giving alms is a "work of justice pleasing to God" (Catechism of the Catholic Church, no. 2462). Hence, each Friday we should donate money or goods to the poor or perform another act of charity. Let's not reach sundown on a Friday without having poured out some of the content of our heart or our wallet or both during the day.