Billy Marshall

Billy Marshall is the "data-driven dad" who cracked the code on happiness—using science.

He spent decades designing technical frameworks and data tools to help business leaders make smart, analytical decisions. But when faced with the messier puzzle of his own well-being—stuck on a question his degrees and decades hadn’t answered despite a loving family and outward success—he realized he needed a new framework for the most important project of all: his own life.

Faced with a 2 a.m. crisis, Billy asked a specific question: What does the science actually say about how to be happy? He wasn’t looking for abstract philosophy, but for evidence-based rules he could count on. He launched an intensive quest, analyzing over 100 peer-reviewed scientific studies and expert interviews. His mission was to find the linchpin—the core principles proven to move the needle on well-being.

The result is Your Happier Life Toolbox, a collection of 42 practical tools derived directly from this extensive research. Billy’s "no-fluff," evidence-based approach proves that you don’t need a Ph.D. to apply the science of happiness; you just need the right tools.

When he’s not optimizing spreadsheets for joy, Billy can be found cruising the Manasquan River on his pontoon boat, organizing neighborhood cornhole tournaments, or trying (and sometimes failing) at DIY projects. He lives in New Jersey with his wife, Suzy, and their energetic golden retriever, Yeti, and is a proud father of five and grandfather of five.