James 1:3 Knowing this, that the trying of your faith worketh patience. 4 But let patience have her perfect work, that ye may be perfect and entire, wanting nothing.
As tests come in your life and things even make you doubt your faith you can rest assured that this will make you or break you. If you are truly born again then your faith will be tried. You will learn endurance, patience.
You will see that God is at work in spite of the circumstances. You will watch God do something in you. He will grow and develop you so that you mature into a strong and vibrant saint and testimony of His grace.
So do not be shocked when things are happening in your life. Deal with problems. Deal with doubts Run to God. Get deeper into His Word.
This will grow and mature you!