Have you taken to abusing any drugs? Any risky behaviors that don’t correspond to your personality? Do you have “ups” and “downs” in terms of your mood? Do you find yourself doing crazy things for like a week, and your friends telling you that you did crazy things that you don’t remember?
There may be an underlying personality disorder, and at worse, a psychiatric illness. Your speech is clear, your thoughts are organized, so I wouldn’t say it is something as severe as schizophrenia.
You may want to seek help with a therapist or a psychiatrist, though. This could be the beginnings of a psychiatric illness. Which are MEDICAL illnesses and require medicines to help.
Otherwise, as to answer your last question - of course, you can make yourself big from scratch. Lots of people have done it.
I myself was a messed up twit back in college and pretty much lost control of my life for a year or two. No drugs, or anything. It was just a series of unfortunate events and it was too much for me to take. I took a break from things and went into teaching for a bit which provided some stable income and time for me to re-group and re-organize.
Maybe you need to change your line of work. Get some hobbies.
The information you give is vague. I don’t know any details over why you’re having fights with family and friends, but you need to ask why you are getting angry at them?