A considerable amount of criticism has been aimed at De Gea regarding his United performances since he joined the club from Atletico Madrid in 2011, but of late he has been earning widespread praise for his displays in a Red Devils shirt.
And asked about his form this season, the 23-year-old Spaniard told Inside United: "I'm very happy with it. I feel like this is a particularly good moment in my career right now and I hope to continue in the same vein for some time to come.
"I feel like I'm always improving and I want to make sure that continues as well."
United boss David Moyes has been among those hailing De Gea's recent play, and the goalkeeper added: "It's very important that the manager values your work and now it's important to continue to play well and help the team.
"I'm very happy the manager praised me but, for me, the journey doesn't stop now - I want to keep earning praise and playing well for this team.
"I play for my team-mates and I play for my manager but I also play for the fans.
"When you win over a club's fans, it's a very proud moment. These are the people who pay money to come to watch you every week.
"You owe it to them to play well and give your best, so it makes me extremely happy to hear the fans singing my name."
United, currently fifth in the Barclays Premier League table, are at Cardiff on Sunday.