My Boss [M50] told me I [F23] dont talk too much and that made me feel sad, is there a way to improve this?

Sorry for the Bad spelling but English isnt My first language and writing this as i try calm myself, for almost my entire life i F23 have been very quiet, not always as when i was a kid My sociales skills were average and there was no problema, then i began Elementary school and my personality clashed with My schoolmates and teachers, i was loud and always curious and talkative, maybe too much and for that time all my social circle said some things that althougth i dont remember it makes me feel very sad, and i guess that was what made me more shy, i dont really talk that much. There was days i didnt Say anything at all and My voice sounded off when i finally talked, i'm in the last parte of my university courses, i study law of all things and while doing my practices My superior, one of the prosecutor of my city tell me i acted like i was 'mute' and that make me feel bad the rest of the day, then the nail in the cofeen came when another worker tell at me that i never greeted and that i never talked, at that point i was pissed and telled them that i do talk, that comment make me feel SO Bad that i cried at lunch time in my house, so by the time i write this im still crying, i always thougt that if i didnt talk maybe the people at my sorroundings don't wont think i'm a brother, but now i realize thta wasnt true, so maybe someone here could give me advice? My family just think i'm weird and don't wanna brother My Friends about it.