In our Catholic tradition, there are three main penances for Lent: prayer, fasting, and almsgiving.
Lent is a great time to renew our personal life of prayer. The first thing to do is simply to pray, no matter how. Even if it seems badly done or a waste of time, it's important just to carve some regular time out of our day and spend it with the Lord in prayer.
It's like keeping an appointment. A reliable person shows up for appointments, barring some unusual circumstance. Prayer is a daily appointment with the Lord.
The most important thing about prayer is simply to show up. Then God will do the rest.