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third time's a charm

alt. One is sure to succeed at a task or event on the third try. prov. One is sure to succeed at a task or event on the third try.

Wikipedia
Third Time's a Charm

Third Time's a Charm is the debut full-length album by Better Luck Next Time. Released only in California on December 10, 2005, the band recorded, engineered, and produced the album entirely on their own. Copies were sold by the band through their website and at shows. The album later caught the attention of InYa Face Records in Tokyo, Japan, who released it as Better Luck Next Time in 2006. Enemy One Records also released the album in Brazil. It was re-issued for nationwide distribution in the United States on July 10, 2008, through World Records. The re-issue included an acoustic version of "Shoebox Memories" as a bonus track.

Usage examples of "third time's a charm".

They say the third time's a charm, and I've been crossing my fingers and toes like a fool.