I agree. I talk fluently sometimes with others but starting makes things harder. If I need to ask some questions to someone at that time it becomes harder for me. When I speak long sentences I speak fluently most of the time atleast with my friends. But suppose I need to ask something to a shopkeeper/ waiter etc at that I stutter a lot. During phone calls I can't say hello properly lol. Even after saying hello I stutter a lot if other's are present. Sometimes I stutter because I think before saying but sometimes I stutter without thinking because of immediate anxiety, but when I am alone I never stutter.