I want to change my behavior and way of speech

I want to learn how to speak like normal people (read the post for more context)

Hi

I'm a 22 years old man with OCD, I've spent all these 22 years of my life isolated

And I just realised how nervous my speech is

When I talk to people, I just want to finish is quickly and my speech way becomes nervous or impulsive

Or when someone orders me to do something, I feel irritated

And when I argue with others on senstive topics, I become impulsive and

I'm tired of this and I want to change my behavior, I want to change this stupid behavior, but I lost my hope since I'm 22 and I think it's very late to learn

I just want to check if there are people who had similar situation to this but managed to solve it