Hey, I would do whatever career you fancy, and don’t let your stammer hold you back. You’ll find, that especially with consistent practice using the phone and talking to people that it will actually help you with getting over your fears. I do exactly the same, and the last 6 months of practice, I have moved up so many levels of comfortability and confidence in my speech by just putting myself out there. I avoided so much for years but I’m now doing everything I can to not avoid it, and it is getting easier!