I can't express my feelings the way i want to, what is wrong?

I can never speak my mind to a person in real life… i can’t say what i’m feeling about anything honestly to my family, my girlfriend, anyone other then internet because i believe here no one knows me… hell i don’t even know what i’m really feeling and what i’m doing right now… i’m seriously confused about everything… i don’t even have the patience to review what i just wrote… what should i do man?