What are some effective strategies for managing pre-race jitters and anxiety that can be implemented in the hours or minutes leading up to a competition, and how can these techniques be tailored to an individuals unique personality and needs? Are there any specific breathing exercises, visualization techniques, or self-talk methods that have been proven to be particularly effective in calming the nerves and preparing an athlete for optimal performance? How can a rider balance the need to be focused and composed with the natural adrenaline rush that comes with competing, and what are some common mistakes that athletes make when trying to manage their nerves that can ultimately hinder their performance? What role does experience play in managing race-day stress and anxiety, and are there any specific strategies that can be employed by newer or less experienced riders to help them stay calm and focused under pressure? How can riders use their training and preparation to build confidence and reduce anxiety, and what are some key indicators that an athlete is properly managing their nerves and is ready to perform at their best?