As a runner gains endurance by enduring another mile of suffering, we, as Christians, gain the ability to trust God through trials. Each experience deepens and strengthens our faith in Him. Only by overcoming difficulties can we grow in our lives. There is no exception in Spirituality.
Patience enables us to persevere in the face of adversity and to remain faithful to God. Our faith in God should never waver, regardless of the circumstances. God is worthy of our trust because He has proven Himself to be faithful throughout history, and He always keeps His promises. God has promised us a future of peace, not evil, so we can trust that He will see us through the difficult times in our lives and bring us to an expected end (Jeremiah 29:11). Our perseverance and endurance in the midst of suffering demonstrates our faith in the Lord, which makes us perfect, complete, and lacking nothing. 
Whatever you face today, remember that there is wonderful joy ahead. Consider trials to be opportunities to strengthen your faith and allow patience to do her work in your life. God is working on your perfection!

Dear Heavenly Father, please give me the strength to endure the physical and emotional pains that I am experiencing in my life. Teach me to be patient and grateful in all circumstances. Thank You for providing us with peace and eternal salvation through your son, Jesus, and the Holy Spirit. Keep my focus on Jesus and my reliance on Him in all things. Bless me with a patient heart, Lord. 
In Jesus's name I pray. Amen.