The 25-year-old was finding his form after a frustrating foot injury lay-off when he was sent off against Swansea on February 1, and subsequently received a three-game ban.
In Carroll's absence, Sam Allardyce's side have won three successive matches to extend an unbeaten run to five games, and in the process have pulled clear of the relegation zone and up to 10th place.
Carroll will be available again for West Ham's trip to Everton on Saturday, but the striker is taking nothing for granted.
"The sending-off has happened and I was annoyed at the time with missing games, which was not what I wanted after the season that I've had, but I'm over it now," Carroll said on the club's official website.
"I just need to focus on playing the games now and getting back in the team and playing games.
"I have just got to work hard in training, because that is all I can do. At the end of the day, the manager picks the team."
Carroll last featured for England in the 5-0 World Cup qualifying win over San Marino at Wembley in October 2012.
However, the 6ft 3in former Newcastle and Liverpool frontman is determined to become part of Roy Hodgson's plans for Brazil this summer, having been tipped for a recall to the international squad in next week's friendly against Denmark.
"I have definitely not given up on the England squad and I never will do," he said.