To reach the end prayerful souls need a muy determinada determinacion (a very determined determination) to persevere until they reach the end.
"To those who want to journey on this road and continue until they reach the end, which is to drink from this water of life, I say that how they are to begin is important - in fact, all important. They must have a great and very determined determination to persevere until reaching the end, come what may, happen what may, whatever work is involved, whatever criticism arises, whether they arrive or whether they die on the road, or even if they don't have courage for the trials that are met, or if the whole world collapses." (The Way of Perfection 21:2)
Prayer takes effort and the courage to continue despite any criticisms. So begin. Pray. Pray faithfully, everyday, always, at all times and never give up.