I used to play both AFL and rugby... and I never really wore a helmet until I got knocked out and had some time on the sidelines... when I came back I was also scared of going in hard for the ball and not really being as physical as I used to be... So that's when I started wearing a helmet, then I pretty much had no regard for my own safety... maybe that's why I am so dumb....... ANYWAY... I suggest listening to "pump up" music that gets your heart pumping and you feel all pumped up and stuff... Or I am sure their are specialists that deal with this stuff but I like my money in my own pocket... But whatever works you should do!