There's a reason Toastmasters is so recommended in this thread: it's really good at what it is, so try that out. For other options, try speaking a lot more in

There's a reason Toastmasters is so recommended in this thread: it's really good at what it is, so try that out. For other options, try speaking a lot more in low pressure situations. At work, try small groups to start. Ask your manager if you can lead a team meeting where the agenda is defined, and your role is just to facilitate discussion. Present your work to 3 teammates and ask them to hold questions until the end. In your personal life, if you are a regular at a coffee shop or lunch place and see the same person repeatedly, learn their name, then ask them how they are doing whenever you see them. Try to actually answer with something specific when people ask how you are doing. If you have kids or access to them (young relatives), try reading out loud to them. Join a writing seminar that asks you to read your work out loud. The above are just a laundry list of ideas, the point is basically "find low pressure environments to speak, do it as often as possible, vary the scenarios."