But Lara said his players were confident going into a make-or-break Super Eights game against South Africa at the Grenada National Stadium here Tuesday.
Responding to accusations that under his captaincy the West Indies had played lacklustre cricket and appeared to lack motivation, Lara said: "We have three games left and if we win all three we have a good chance of playing in the semi-finals. That is enough motivation."
Lara acknowledged that his team had under-performed in their most recent game, against Sri Lanka in Guyana eight days ago.
"Yes, we did look flat," he said on Monday. "But in the last few days the guys have looked in the mirror and we've moved on."
The West Indies captain said a quick succession of games in the early stages of the Super Eights had drained his team but the nine-day break before the South African game was a positive.
"Everyone was looking forward to the break. We're definitely refreshed, we've had some good net sessions and the guys are looking forward to the remainder of the tournament."
He said the pressure of playing in a World Cup at home could be turned into a positive, especially if the team gained support from home crowds.
"If we gain some momentum, crowd support and the fact that we are playing at home will be a big advantage," said Lara whose team have lost to Australia, Sri Lanka and New Zealand in the second round so far.
He added that playing World Cups away had not helped the West Indies either.
"It's the first time the West Indies have been hosting a World Cup and I've never played in a final in my five World Cups," said the veteram skipper whose leadership has been called constantly into question over the last week.
Lara said South Africa's shock 67-run defeat against Bangladesh Saturday had given the West Indies some pointers.
"Bangladesh batted professionally so they had a total to defend and then they put South Africa under pressure. The most important thing in this World Cup is to put teams under pressure," he explained.
"Against Australia, New Zealand and Sri Lanka we were under pressure in the first 20 overs and then it gets very difficult."