He was feeling lucky.

A split-second decision while choosing which $10 ticket to purchase made Wareham resident Adam Barber a millionaire.

On May 7, Barber became the first $4 million prize winner in the latest edition of the Massachusetts State Lottery “100X The Cash” instant game that went on sale March 3.

Barber, who bought his lucky ticket at Gateway Gas, 2537 Cranberry Highway, was going to buy a “$1,000,000 Cashword” ticket, but changed his mind at the last moment and asked for a “100X The Cash” ticket instead.

Barber chose to receive his prize in a one-time cash payment of $2.6 million.

Barber said plans on using his winnings to buy a new car and a home for his family. Gateway Gas will receive a $40,000 bonus for its sale.