Blessed be the God and Father of our Lord Jesus Christ, who according to His great mercy has caused us to be born again to a living hope through the resurrection of Jesus Christ from the dead, to obtain an inheritance which is imperishable and undefiled and will not fade away, reserved in heaven for you, who are protected by the power of God through faith for a salvation ready to be revealed in the last time. In this you greatly rejoice, even though now for a little while, if necessary, you have been distressed by various trials, so that the proof of your faith, being more precious than gold which is perishable, even though tested by fire, may be found to result in praise and glory and honor at the revelation of Jesus Christ...
If you want to strengthen your faith, exercise it!
When someone wants to build muscle, they know it doesn't happen all at once. They don't go into the gym on Thursday evening at 7pm and come out at 8pm bulging with muscles. No, they know that it'll be a long steady process of exercise that makes them strong.
In the same way, God's letting you know that He allows annoyances, difficulties and trials along life's road to gradually strengthen your faith. When difficulties come along, don't view them as obstacles to your faith, but rather as opportunities from God for you to trust Him and grow.