The book of Proverbs has a number of clear, practical principles regarding strategy and planning.
Proverbs 14:15: "A simple man believes anything, but a prudent man gives thought to his steps."
Proverbs 15:22: "Plans fail for lack of counsel, but with many advisers they succeed."
Proverbs 16:3: "Commit to the Lord whatever you do, and your plans will succeed."
Proverbs 16:9: "In his heart a man plans his course, but the Lord determines his steps."
Proverbs 20:18: "Make plans by seeking advice; if you wage war, obtain guidance."