I’m thankful for the growth and life that comes from pain. 
Hebrews 12:11 (Amplified Bible)
11For the time being no discipline brings joy, but seems grievous and painful; but afterwards it yields a peaceable fruit of righteousness to those who have been trained by it [a harvest of fruit which consists in righteousness–in conformity to God’s will in purpose, thought, and action, resulting in right living and right standing with God].