"I've been country music male artist of the year three times in a row, I've got seven platinum albums, about 15 gold albums - and still nobody knows who I am - it's crazy aye."
His advice to children was to "decide in your heart what you want be [careerwise] now...don't leave it too late".
And "when you've got a dream - got for it".
"It took me a long time to realise my dream, it wasn't a dream."
Marsh, from Auckland, who was born on the veranda of his grandparents house in Te Kuiti, because his mother couldn't get to hospital in time, said he grew up on a farm.
"This young man grew up able to ride horses, drive tractors, and by the time he was 12 years old he was driving big trucks loaded with hay on the roads.
"You couldn't get away with that nowadays."
After a largely unsuccessful couple of years in the fifth form, he decided to pursue a carpetry apprenticeship.
He trained as a carpenter in Auckland and after five years became a qualified builder and "started on his journey in life".
But whistling and singing on building sites led to singing performances at various venues before entering a country music talent quest competition.
One of the judges dismissed his singing ability but the negative remark only made him focus stronger on his desire to be an entertainer.
After years of performing and touring, he now has his own little theatre in Tuakau and, despite three heart valve operations, is as busy as ever.
