If that catbells path scares you, then your problem is with the 'exposure', the drop away of land around you. It gives you that whirling feeling like you are about to lose your balance - virtigo!The only way to overcome this is with practise. The more you expose yourself to this fear the more you will overcome it, until it will no longer bother you. Forget scrambling for now but take yourself out along some of the less sharper ridges until you become accustomed to the exposure, then go from there.