The Yorkshireman followed in the unwanted footsteps of Mike Weir after a poor second round 78 saw him miss out at Augusta.
It rounded off a miserable 12 months on the course since he won his first Major.
"We’ve had two fabulous years and then you have a little bit of a downturn and it feels like the world is coming to an end,” said Willett.
“Playing Augusta at the weekend would have been nice but we had that in our own hands and unfortunately we let that slip.
Danny Willett finished the second round with a 78
Willett's quadruple-bogey at the first hole left him a mountain to climb
“We’ve hit a lot of good golf shots all year, we’ve just not got on top of anything. Unfortunately it is a results-based game and the results haven’t been there.”
A nightmare quadruple bogey eight at the opening hole, after he lost his footing on the edge of a bunker and slashed his second shot into the trees, put him on the road to the exit.
“It was a foot off the edge of the trap. If it goes in the bunker it’s not too bad, if it goes a foot right you can get a stance. Where it finished wasn’t great and from there it was my own fault. It wasn’t the best start,” said Willett.
English golfers at the 2017 Masters
Tue, April 4, 2017
Express Sport runs through the field of English golfers chasing the green jacket at the 2017 Masters
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Express Sport runs through the English golfers competing at the 2017 Masters
Willett is the first Masters champion to miss the cut on his defence in 13 years
“I played some pretty good golf in the middle and couldn’t hole a bean. It’s been a disappointing couple of days.
“It’s been a tricky 12 months.”
Willett will have to stay around at Augusta to hand over the Green Jacket to his successor tomorrow night.
Tyrrell Hatton and Tommy Fleetwood also missed the cut on their Augusta debuts as did Hampshire amateur Scott Gregory and Chris Wood. But the English quartet were in good company with Open champion Henrik Stenson and twice-winner Bubba Watson also eliminated.