same. it's all about however well you manage the 2 sets of emotions (one set being the naturally building feelings of doubt, anxiety, and shame: the ones that bubble up from within; the other set being the ones that serve to prevent the first from total derailing you). something interesting to consider- and i've only been able to notice this since getting a fitbit- is that expressing how you feel without friction from comes from fighting it back and/or suppressing it has very similar influence on my heart rate. if i'm calm and nothing is there to mess with that, the heart rate is low. at the same time, if i'm very anger, and i allow myself to express that anger without doubt or shame, my heart rate is equally as low. for me at least, this is how my block stutter works too. when you're quoting someone outwardly in a presentation, you're putting forward words that you both don't own and also would have to defend if asked to because you've presented the quotes in support of some point you're trying to make. though common for people use quotes to support, it's not as common for the presenter to feel completely confident in defending those words as if they were your own. also, quotes from super smart people or accomplished people are usually used (like sigmund freud, aristotle, or some top scientist in some field of study). that's a tough act to follow and defend. my advice to you is to practice a shit ton, so that you're as comfortable presenting some work case as you would be to answer the question "what did you do today?" or "how are you?"