Paolo Di Canio praised his Swindon side for focusing on promotion rivals Torquay with a 2-0 win ahead of their trip to Wembley this weekend.
The Robins eased past United in a comfortable victory at the County Ground to move seven points clear at the top of League Two, bouncing back from Saturday's defeat at Crewe and heading into the Johnstone's Paint Trophy final against Chesterfield in good spirits.
The visitors provided little resistance against the rampant Robins which Di Canio has put down to his team's growth in professionalism.
He said: "What we did proved that the lads are a very professional group. I'm here to achieve something important and change the mentality that normally you can have - especially at this level when you go to the top and relax and start to think about Wembley.
"This is normal, it's human. But I'm here to change it. I spoke to them in a normal way and now I know I have a group of fantastic professionals. And the answer that they've given to me is the right answer because they deserve to perform this way. They want to maintain our position.
"And if we play like this, there is no opponent that can beat us because we are the best. We've proved that once again. It is not easy to go to Wembley for a group of lads. I hope we have another chance in the future to play at Wembley. They are fantastic professionals and a fantastic group, and I'm very happy because of the amazing performance."
Torquay boss Martin Ling, who enjoyed two spells with Swindon during his playing days, believes his side are now in a fight for the second and third automatic promotion spots.
"We started brightly but it fizzled out for us from there," he said. "We got in a couple of good positions in the first 25 minutes but the two set-plays we conceded from will cost you against a quality team. The goals were too easy for them.
"We didn't stretch them enough after their first goal and we started to play even deeper towards the end, which was a little bit ill-disciplined from us. I've said to the players that, sometimes, if it's not going for you, change the approach and go forward a little quicker.
"It wasn't great from us but we looked like being a real test for Swindon in the first 25 minutes. I feel Swindon are already up and it's down to the rest of us to fight for the other two automatic slots. We weren't going to win promotion or lose it here."