The 24-year-old, who has so far grabbed 35 wickets in 27 matches since making his one-day debut against Sri Lanka at home two years ago, is one of five seamers in the squad here and is not sure of a starting place.
But he said that if he was given the opportunity, he would gladly seize his chance.
"It's better to struggle than not to be there at all," he said.
"A person who struggles is better than the one who never makes an attempt. If I struggle, I will also learn. I will surely get an opportunity and I will make the most of it. It's a matter of confidence.
"It is a dream come true for me. This is my first World Cup and I am very fortunate to be even in the squad. I should take it as an opportunity to learn and be with the team."
Sreesanth, who also has 37 Test wickets since making his debut against England at Nagpur last year, believes he will have a major part to play in the tournament.
"I'm sure I'll play a big role in the World Cup," he said.
"It is a great opportunity. I will be very patient and I am sure when the opportunity comes, I will grab it with both hands," he said.
"I have been working hard on my fitness, fielding and batting as well. So with God's blessing, I will surely make good on this tour."
When asked whether he had set any targets, Sreesanth said his aim was to deliver for the team.
"Players do set goals, but every individual has a team goal and the team gives you a goal to achieve throughout the tournament. That is what I have been working on individually. I think it is going to help the team," he said.
Sreesanth said his Caribbean experience would stand him in good stead as he had learnt a lot on the last tour.
"It was a nice tour and I really learnt a lot, especially in one-day games," said the fast bowler, who toured the West Indies last year with Rahul Dravid's side.
"It was not easy, but I was lucky enough to play most of the games. What I have learnt is that you have to be really patient on slow wickets here. You shouldn't really try too hard, but wait (for the opportunities).
"The grounds are small and wickets are really slow, so you have to work harder as a fast bowler. More than bowling fast, you have to use common sense and if you play with the brain, you will do well."
India open their Group B campaign against Bangladesh at the Queen's Park Oval here on Saturday. Sri Lanka and debutants Bermuda are other sides in the group, with the top two advancing to the next Super Eight stage.