What is the purpose of your event?
Inspirational speakers are available for almost every conceivable topic. It is essential to clearly define what specific topic the speaker is covering. 
Resilience-themed events in particular are gaining popularity, as people are becoming increasingly interested in developing mental and emotional resilience. 
Other frequently requested topics include: leadership, customer focus, work happiness, inspiration, dealing with change, innovation, sustainability, education and healthcare. If it is clear what topic you want to cover and what message you want to convey, it will make your search for the perfect speaker much easier.