As John F. Kennedy so eloquently stated, “You can be a great speaker, when your tongue can deliver the message of your heart.”
That means that the key to getting mentally prepared is, first of all, defining purpose.
In order to present anything with conviction, you must have a definite purpose, a mission that you are passionate about.
You then have to embrace that purpose with a burning desire to achieve it.
Cultivate your ideas and ponder upon them to get them organized in the most convincing structure.
And then, let your inspiration deliver the carefully crafted message that you deliver from the heart.
The secret to great presentations is the mental sharpness acquired from red-hot desire.