The Gunners have been held to a number of draws lately and have dropped points they should have taken but van Persie is confident that the chances being created will fall their way.
"In the last three games we have had three draws and that is just not good enough," said van Persie.
"It is six points missing - if we had those six points, but this is if, if, if. It is not really working. What can I say?"
"We are still creating the chances. Even with 10 men against Spurs we had a few chances. I am not really worried because we are still creating.
"Sometimes it is me to blame or a player to blame. Sometimes we are unlucky. Everybody can judge that for themselves.
"We are working hard, but we know we are not there yet," he added.
"We are not scoring enough goals, we are not playing well enough - but everyone stays positive and we are trying to help each other.
"The basics are there, it's just up to us to finish it off now."