"I feel we are unbeatable. I go out there thinking we can win every game," said van Persie.
"Even when Newcastle drew level on Saturday, I never thought 'Oh no we are not going to win'.
"I looked at the time and saw we had 30 minutes left and I was convinced we would win.
"I still look back at the dropped points from earlier in the season and it hurts.
"We are 10 points behind United and six behind Chelsea because we lost some silly points against teams we shouldn't have."