Proverbs 15:5
A fool spurns his father's discipline, but whoever heeds correction shows prudence.
During the night the mystery was revealed to Daniel in a vision. Then Daniel praised the God of heaven and said: "Praise be to the name of God for ever and ever; wisdom and power are his. He changes times and seasons; he sets up kings and deposes them. He gives wisdom to the wise and knowledge to the discerning. He reveals deep and hidden things; he knows what lies in darkness, and light dwells with him. I thank and praise you, O God of my fathers: You have given me wisdom and power, you have made known to me what we asked of you, you have made known to us the dream of the king."
I consider my life worth nothing to me, if only I may finish the race and complete the task the Lord Jesus has given me -- the task of testifying to the gospel of God's grace.
No discipline seems pleasant at the time, but painful. Later on, however, it produces a harvest of righteousness and peace for those who have been trained by it.