The midfielder is not resting on his laurels, though, admitting improvement next season is important.
The midfielder made his debut in a Capital One Cup tie against Nottingham Forest early in the campaign, coming off the bench to haul Spurs level on the night before eventually helping them to victory.
Since that moment he has been a constant starter in Mauricio Pochettino’s side, making 37 appearances across the season and impressing throughout - culminating in him earning a first England cap.
It was a meteoric rise for the midfielder, and he admits it’s been 'bizarre', but earned through hard work.
“It’s bizarre. [Last season] I was playing in League One last season and struggling with injury, [I] never got a consistent run,” he said.
“So to look at this season, it’s been incredible. At the same time, a lot of hard work has gone into it. I’ve put in a lot of work to be ready once the opportunity came around, to make sure I took it."
Spurs are expected, like most sides, to strengthen in the summer as they seek to return to the Champions League once again.
That means Mason may find himself having to fight off competition for his place in the side, meaning he cannot afford to rest on his laurels after an impressive first season.
And despite the season having only just ended, he admits the 2015/16 campaign is already on his mind as he seeks to carry on improving.
"I want to keep improving, my body feels good and I’ll look to get back in early for pre-season,” he added.
“It’s important to have a rest but I won’t take too long off physically. We all know what it means to play for the club and we’re all eager to get the best out of ourselves as individuals and as a team."