[khazhou]

I would suggest, if this is at phobia-level for you, it's worth thinking about why you're getting so nervous.

I went from enjoying public speaking to absolutely dreading it (feeling like I'm falling off a cliff, trembling voice, sudden drops in blood pressure leading to complete loss of train-of-thought). This was literally career-limiting, and I could see how I was being excluded from projects that would require presenting to VPs + execs.

I spent a lot of time reflecting on it, and realized what had happened was that I had taken over management of a failing project, and I wasn't turning it around. Our VP was extremely harsh, and drew out everyone's professional failures/limitations. But I realized that my sudden and complete inability to present, was linked to me "knowing" that my work sucked, or knowing that no matter what I said, it was gonna end badly with me looking like an idiot.

So I would suggest you might think about whether the public-speaking nervousness also happens when you're asked to present something you're happy, proud, and knowledgable about, or whether it's connected to insecurity in your work, project, or your own mastery of the material you're presenting.