Lent is a 40 day season of prayer, fasting, and almsgiving that begins on Ash Wednesday and ends at sundown on Holy Thursday. It's a period of preparation to celebrate the Lord's Resurrection at Easter. During Lent, we seek the Lord in prayer by reading Sacred Scripture; we serve by giving alms; and we practice self-control through fasting. We are called not only to abstain from luxuries during Lent, but to a true inner conversion of heart as we seek to follow Christ's will more faithfully.
"For me, prayer is a surge of the heart; it is a simple look turned toward heaven, it is a cry of recognition and of love, embracing both trial and joy." -St. Therese of Lisieux (CCC 2558)
Prayer
During Lent, we are asked to focus more intently on "almsgiving," which means donating money or goods to the poor and performing other acts of charity. As one of the three pillars of Lenten practice, almsgiving is "a witness to fraternal charity" and "a work of justice pleasing to God." (Catechism of the Catholic Church, no. 2462).
Ash Wednesday and Good Friday are obligatory days of fasting and abstinence for Catholics. In addition, Fridays during Lent are obligatory days of abstinence.