Danny Wilson is keeping calm after Sheffield United's dramatic win over Stevenage in the League One play-off semi-final.
Chris Porter's headed goal five minutes from time broke the deadlock and broke Stevenage hearts after a tense affair at Bramall Lane that followed last Friday's goalless first leg.
Chances were few and far between on a nervy night in south Yorkshire, with keepers Day and Simonsen staying alert enough to pull off fine saves when called upon.
The Blades will face either Huddersfield Town or MK Dons at Wembley, and the United boss was a relieved man when speaking just minutes after the final whistle.
"They were two of the hardest games we have had all season, and I have to say that Stevenage were fantastic again," Wilson told Sky Sports HD1.
"Anybody who wrote them off after the first game because of the result we got there misunderstood how good a team they are.
"But I felt that we dominated large periods, some of the football we played was tremendous. We had some good chances in the second half, but Steve Simonsen pulled off a world class save to keep us in it.
"For the goal it was a fantastic ball from Matthew Lowton, and the rest is history."
United fans spilled on to the pitch to celebrate the win, but their manager was keeping his feet on the ground as thoughts turned to their trip to Wembley on 26 May.
"It's not job done, I wish it was and I wish it was like this after Wembley! Now we are facing one of two teams who are very capable of matching us and us matching them.
"It's been a tight league this year, whether it is the MK Dons or Huddersfield we have to make sure we apply ourselves as we have done for most of the season."