Buzz Aldrin went into outer space and visited the moon. This is such an amazing achievement for him and mankind. Yet he struggled with depression and alcoholism. Here is an article about his life and struggles. He shared his struggles in an interview too.
This story reminds me of a Elijah (1 Kings chapter 18 and 19). He challenged the prophets of Baal to a challenge. He had them set up two altars with sacrificed bulls. He had Baals’ prophets pray for their god to burn the sacrificed bull up. Nothing happened. (Crickets sounds playing here) Then, he has the people pour water three times on the altar for our God. The water filled the trench around the altar. I suspect the wood and sacrifice was dripping wet. Then, he alone began to pray to God. “Then, the fire of the LORD fell and consumed the burnt sacrifice, and the wood and the stones and the dust, and it licked up the water that was in the trench (1 Kings 18:38).” Then, the people believed. A little later, Elijah prayed for rain causing a drought to end. This had to be a high point in his life like when Buzz Aldrin walked on the moon.
But, Elijah ran into death threats and found himself depressed. Buzz Aldrin developed depression and a substance disorder. Sometimes a great experience can lead to a stumble when things get tough again.