Angelo Mathews said he was not prepared to captain Sri Lanka in the World Twenty20, but will do all he can to inspire his side in India after a poor showing at the Asia Cup.
All-rounder Mathews this week replaced Lasith Malinga as T20 skipper due to knee injury that is troubling the paceman.
Mathews has skippered his country in all three formats of the game, but was not expecting to lead the side in the defence of their World T20 title.
"I was not," Mathews said when asked if he was ready to take the chance to be captain straight away. "But I have the experience of captaining for quite a few years now so it is a challenge.
"The selectors and Lasith have been planning for this tournament for a quite a long time so they worked together. And now it is a whole different situation, so I have to do the best and get the best out of the team which I have."
Mathews is unaware how long he will remain in the role, but is determined to do the job to the best of his ability as Sri Lanka aim to show a positive response to losing three of their four Asia Cup matches in Bangladesh.
He added: "I don't really know what the thinking is after this. I was told to lead the team in the World Cup and how can I say no.
"I can't let the team down and the country down. I will take this as a positive because I know they trusted me. I will try my best to do whatever possible to get to the top with the team that I have.
"They have given me the team that I wanted and now it is the matter of going out there and expressing ourselves.
"Not going in as favourites, it is doing a favour for us. We have admitted that we haven't played good cricket in the Asia Cup. But the morale ... well, the morale in the team is quite good.
"We can't say that we are all depressed and we are mourning about the Asia Cup. It is done and dusted. It is a new series. It is a fresh start for us, so we are hoping we will click."
Sri Lanka face New Zealand in a warm-up game in Mumbai on Thursday and take on Pakistan next Monday before starting the tournament against a qualifier three days later.