"I would have to say so. The moments you get to celebrate with your family and win in the last minute of the game, it doesn't happen often," Moyes said. "It can go against you, but tonight is a brilliant feeling.
"If somebody had said three years ago when I took the job that you'd avoid relegation and finish in Europe and I've said you were mad.
"This competition has been great for us, the players have been remarkable."
Moyes was able to share a moment with his 87-year-old father David Sr. after the match.
"I thought he was the first one who should get the medal round his neck," Moyes then told a news conference. "He's had a lot of moments over the years and not had that moment, so I hope he's enjoyed it."
Moyes previously coached West Ham in the 2017-18 season, helping to save them from relegation, but left at the end of that season when his contract was not renewed.
He then returned in December 2019 and again helped guide the club clear of relegation. Since then, he has helped the club qualify for the Europa League and last season go on a run to the semifinals before losing to Eintracht Frankfurt.
Wednesday's triumph means West Ham qualify for next season's Europa League and will play European football for a third consecutive season.
"These sorts of moments as managers don't come around often. This is a great moment for us," Moyes told BT Sport. "It is a brilliant club in the East End of London that does wonderful work in the community. It is a great family club. It is getting better and stronger. This is another step on the road of continued progress.
"We have gone unbeaten in Europe, which is incredible. We only lost last year in a semifinal, two incredible years and we get another one now."
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