They want non-fiction prose and non-fiction poetry. They have detailed guidelines as well as several suggested topics for each theme. Two of their upcoming themes are:
-- Best Cat Ever…: (“We are looking for first-person true stories of up to 1200 words. We want your funny stories, your heartwarming stories, and your mindboggling stories about your cat.”). Deadline: 1 June 2026 (extended)
-- Miracles, messages from heaven & angels (“We are now accepting stories for another book about unexplained happenings and occurrences. Stories about miracles, angels, messages from heaven, premonitions, amazing coincidences and other unexplainable but good events! … We are looking for powerful, astounding, stories that will make people say "wow" or give them chills. This book is for everyone, whether religious or non-religious.”). Deadline: 1 June 2026 (extended)
They have more themes listed, with a June-end deadline: Count your blessings; Random acts of kindness; and Stories about using positive thinking. They have other themes listed too, with later deadlines. Chicken Soup for the Soul pays $250 for works up to 1,200 words. Details here and here (also see other tabs on this page, including FAQ).

Deadline: June 1st, 2026