More space is devoted to the reign of Hezekiah than any other king, in part because of his example of repentance after the news of his impending death.
Winter is a time of cold, darkness, and sadness. As many as 10% of people in northern areas have Seasonal Affective Disorder. The Psalms for winter can help.
We must allow God to show us how to carefully number our days in order to gain a heart of wisdom and develop a godly perspective upon our remaining time.