Also we need to pray for the gift of faith. It's given initially, so we can't gain it on our own. Lots of Christians struggle with faith, hope, and charity, but never ask God for those virtues.
Discussion
Praying is one of the exercises the priest told us to do to “work out” our faith to strengthen it. For those who struggle, an inwards reflection is due, to help figure out why they have been away from God, to figure out what separates them the Lord.
Once that has been done, a confession is in order, and then repentance.