Manchester United ace Wayne Rooney says he needs to get angry again to recapture his best form.

The 24-year-old believes he is paying the price for trying to curb his naturally aggressive streak.

"It's still not where I want it to be, I still need to be scoring more goals," said Rooney, who has assured Fabio Capello he will be fit for England's Euro 2012 qualifier against Montenegro next week.

"I need to be getting involved in the game more, I need to be a bit more aggressive, maybe that aggressive streak has gone too much out of me.

"So I'll be trying to get that aggressive streak back in the next games I play in.

"I've played four or five games, so I've still got a few more games before I'm at my best, but I'm hoping that'll come soon enough. I think half of it goes with maturity, you don't do stupid things on the field which you don't really need to do.

"Then the other half, you're conscious of getting yellow cards, red cards, suspended.

"But I feel it's something I need in my game, which I need to get back, and I'm sure my form will come from there."