For regular talking to others I don't have any advice except every time you do it you will get better in it - and if you feel crippling fear talking over a coff

For regular talking to others I don't have any advice except every time you do it you will get better in it - and if you feel crippling fear talking over a coffe with someone I'd say see a therapist. For crowd talking or performance it helps if you practice your talk to someone you trust and can accept his criticism. Go through your presentation 3-4 times lets you memorize your presentation and distills your message. The familiar sentences will save you when anxiety hit you in the middle of the talk and you feel like your brain is empty. It also helps if you have a message instead of memorized sentences one after another - try to build your speech around one single message. If you present yourself in a foreign language the practice also helps finding the correct words and expressions. It also helps if you image your audience naked. The anxiety will maybe never go away but it can be familiar enough to become something you can always handle. And remember - the only time a man can be brave is when he is afraid.