The 23-year-old joined the Reds in a record £35m deal from Newcastle United in January 2011 after scoring 11 goals for the Magpies in the first half of the season.
Carroll has scored just 10 goals in 50 appearances since moving to Anfield, but the England striker maintains his poor form has never affected his confidence.
“I’ve always been confident even when I’ve had a drought of not scoring or not playing,” Carroll told Liverpool’s website.
“I’ve always been confident of what I can do. I just need to be out there with a run of games and I’ll get some goals.”
Carroll feels he has turned a corner at Liverpool after he netted the winner in 3-2 victory over Blackburn Rovers at Ewood Park before scoring in stoppage time to help the Reds beat derby rivals Everton 2-1 in their FA Cup semi-final last weekend.
“Two goals in a week, it’s great for me,” added Carroll. “Two winning goals as well. I’ve been working hard all season and giving it my best. I’m getting my rewards now.
“Getting a goal at Wembley, in the semis against Everton, it’s the best feeling ever.
“After the game I was one of the four players picked for a random drugs test. By the time I got in the dressing room afterwards everyone had gone!
“My buzz was kind of gone but when I got on the bus it was great. I was excited again and everyone was buzzing.
“Everyone keeps bringing it up, asking me about it and how good it was. Obviously it’s a massive goal for me as well and it feels great.”
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