How can you not believe in Jesus when this happens?

My best friend told me a true story about his life and it has totally convinced me. My friend married a girl years ago, it went bad, he lost his fortune, screwed up his degree, lost his confidence, health declined to a serious low and spent years picking up the pieces from his wrecked life. He then in desperation made a sincere prayer to Jesus for help to get his life back and find a nice wife. Within 2 weeks he met his current wife, after knowing her he refound the chance to study and got a Master's degree grading with A on every module and his thesis. After looking for a job using every site he could find on Google yet not finding a suitable job where hours and pay balance well. His wife gave him one single website where he found a good company with great salary and good hours. He now studies his PhD and enjoys a prosperous, healthy life with her. He told me the biggest significance is his admittance to Jesus he needs help and spent time to chronologically list his confessions. After witnessing his story, the revolution of his persona and where he is now in life and the contentment he has. How can one not believe in Jesus? BTW I wanted to share this all with you as it is a beautiful true story of a grueling struggle.