I still stutter, but actually i don't have a social anxiety. For i reach that accomplishment i start to give good morning for the market cashier, every random person who i see in street. It's a time-consuming process, but over time you start talking and it becomes something automatic in your brain, over time you increase your "socialization skills" whether it's starting a random chat with someone random, you know? come up and say something about some topic, the weather, or something else. Not to mention that the main thing you need to do in this process is to work on your value, not be afraid of judgment and know that no one is worth more than anyone else. You will stutter a lot in the process, but the important thing is not to think too much and move on, any small conversation is a victory for you at this moment.