Hebrews 12:6-8
For whom the Lord loveth he chasteneth, and scourgeth every son whom he receiveth. If ye endure chastening, God dealeth with you as with sons; for what son is he whom the father chasteneth not? But if ye be without chastisement, whereof all are partakers, then are ye bastards, and not sons.
God never promised that he would make our lives easy. We should be thankful that he put trials in our lives. These trials help us become stronger in our relationship with him and help us grow. Without these trials we would not understand or appreciate the blessing in our lives.