The 30-year-old from Great Yarmouth admits her life has changed for the better since she beat Nour El Sherbini in the world final in Malaysia in March.
Media commitments including a brief appearance on Blue Peter have helped Massaro spread the word about a sport whose continued Olympic exclusion hampers its bid for a consistent profile.
But the England team heading for Glasgow could prove one of the Games' success stories as it also includes current men's world champion Nick Matthew.
Massaro, who won doubles silver with Jenny Duncalf in Delhi four years ago, said: "This will be my second Commonwealth Games and a lot of things have changed for me over the past four years.
"I was ranked around eight in the world in Delhi and that meant I had to play the world number one Nicol David in the singles quarter-finals and I was knocked out.
"But now I'm up to number two and I've been playing Nicol in a lot of finals and managed to win quite a few of them.
"Winning the world title brings a confidence. You don't want it to spill over to arrogance but it's the knowledge that the work you've put in week in, week out has come through, and that what you achieved can never be taken away from you."
England dominated the squash event in Delhi with Matthew heading a clean sweep of the men's singles medals, and Duncalf taking women's silver.
In addition, Matthew partnered Adrian Grant to men's doubles success. Grant, James Willstrop, Peter Barker, Daryl Selby, Alison Waters and Emma Beddoes complete the England line-up for Glasgow.