If Wayne Rooney does not learn to control his aggression, I fear it could cost England the chance of winning the World Cup.
Rooney was our best player by a mile against Ukraine, dictating the play and the man who raised the tempo. He was brilliant - and then he nearly spoiled it with one moment of madness.
I am talking about his tackle on Oleksandr Aliyev in the second half, for which a stricter referee might have shown a red card. If I had made that tackle when I was playing, everybody would have said it was a great tackle.
But unfortunately the laws of the game have changed and you just can't do that any more. Of course he got the ball, 100 per cent, but that doesn't matter if the referee deems the tackle to be dangerous - he can and should send him off. You might not like it, but those are the rules.
It frustrates me to hear his team-mates and even his manager say that that is the way he is, and that you cannot take away his passion or try to change him.
If you've got a wayward child, you shouldn't just accept it. You have to try get them to control themselves and relax.
England and Manchester United need to help Wayne sort this problem out, and it needs to start with some discipline instead of always sticking up for him when he steps out of line.
The England fans were cheering him last night, but if he did that to a player from their club they would probably want to lynch him.
If he aims a similar tackle on Gareth Barry at the weekend, the Aston Villa fans who were at the England game might not be so indulgent.
He has to sort it out - he is too important a player to be allowed to undermine his own talent.
Overall, the England display was not great. It lacked fluency and we were lucky to come away with a win.
Our midfield lacked pace once Aaron Lennon went off, and at times it looked like Ukraine could pass the ball through us relatively easily.
A better side would have beaten us last night, and it was telling that Fabio Capello was reluctant to heap too much praise on his players.
Five wins from five is a great start, but Capello knows the performance level will have to keep rising if we are to have a chance of winning the World Cup. He is a realist.
Our results do not immediately make us great, and a good performance can make a real difference, especially in major tournaments.
When I went to the 1990 World Cup, the atmosphere was very negative at the start of the tournament - especially after our draw against the Republic of Ireland, which was an awful game.
But gradually we improved and the mood picked up and even though we lost the semi-final to West Germany, people were pleased with us because we played so well.
As far as the present England team is concerned, there is still a lot of work to do.