Hebrews 10:36

For you have need of patient endurance (to bear up under difficult circumstances without compromising), so that when you have carried out the will of God, you may receive and enjoy to the full what is promised.

In order to bear up under difficult circumstances and have faith it takes practice.  We have to practice our study of the word, worship, praise and seeking God.  When we know what we believe in and why we can stand on that knowledge.  The knowledge only comes from patient endurance and sticking with God and His word in belief.