Spurs were forced to come from two goals down, and the Denmark international has praised the team's display in the second period.
He told Sky Sports News: "Of course the second half was better.
"I think the whole of the first half, we tried but got a little speech [from manager Tim Sherwood] at the break and we were like new guys.
"We played like the manager wanted in the second half and we showed [our quality] way more."
Eriksen scored twice before Gylfi Sigurdsson hammered in a stoppage-time winner from around 25 yards.