I can relate so much to you. Today actually I decided I wanted to meet at least one person at university every day that I'm there and today I ended up meeting 3 people and having fun with my friends, laughing, joking etc. To really come out of your comfort zone and make it comfortable for you is actually not that hard. It's amazing and I love my life just like you and everyone else who does what we do. It's amazing to open yourself up to people, not giving a crap about if you stutter or not and getting to know people. I love speaking and meeting people. It's crazy but I never would have said that 2 years ago+. I still struggle in presentations but that's that, it's not the end of the world. If you have any tips for presentations actually, I would appreciate it. But even if I don't get any advice, I'll do it anyway because I don't care what people think about the way I speak, it's about what I say. Good on you mate and keep it up!