2 Corinthians 4:15-18 KJV
15 For all things are for your sakes, that the abundant grace might through the thanksgiving of many redound to the glory of God. 16 For which cause we faint not; but though our outward man perish, yet the inward man is renewed day by day. 17 For our light affliction, which is but for a moment, worketh for us a far more exceeding and eternal weight of glory; 18 While we look not at the things which are seen, but at the things which are not seen: for the things which are seen are temporal; but the things which are not seen are eternal.
We will have hard days and hard times in life, but we can take comfort knowing that even though it is hard, it is there for good. We may not see or understand how it is good, but everything shapes us and changes us into who God desires us to be. It might be tough here on earth, but the eternal rewards are worth it!