I know a lot of people preparing for a sporting event at the moment. Although I have worked with a variety of sporting abilities, from beginners to accomplished in their field... Sorry no names will be given... They all need similar support. They have the drive and desire, but help developing a clear vision of how they will succeed boosts motivation and confidence. This further helps them achieve what competitive and fun seekers want -A personal best!
Are you prepared To go through that mental wall? Are you struggling with pain or injury? Are you running for a charity and worried about doing your best for others? Are there expectations on you for other reasons, adding the pressure.
Here is a nice article on how professional sports people use visualisation and a basic guide on how to do it http://www.psychologytoday.com/blog/flourish/200912/seeing-is-believing-the-power-visualization
Of course if you want more specific or personal support to help improve your sporting performance you can contact me.