Stop thinking and making up stories in my head

The reason I used to think up so many stories in my head was to escape the reality of this world. My life was boring and frustrating; I was unhappy with myself and yearned to live in another world that is a hundred times more exciting and fascinating. I have always had a great imagination, so I created several different fantasy worlds in my head, with interesting characters and thrilling situations. But unlike many other people who do this, I myself was not part of these worlds; I focused on the lives of others who were cooler and more talented than me so that I could forget about myself and my life.

Unfortunately, reality always catches up, and neglecting my own life only caused my future to worsen. I wished I could always stay in my fantasy worlds; waking up to myself became painful. I realized it was time to rectify the situation and save myself before I lose everything and eventually go crazy.

When the summer holidays arrived, I could finally relax and recover from the horribly stressful and depressing years of high school. I started concentrating on my life, improving myself and doing the things I want and like. Even as uni started, I always looked out into the real world and was more communicative and social. There were so many things I needed to do and I began planning out my goals and tasks. Half a year has now gone by, and I have realized that during this time I haven’t escaped into my imaginary worlds at all. I admit I did go into my stories several times, but they were only for fun and the durations were short. Even though my life is still not ideal, I would rather face the pain and challenge of reality than escape and avoid it. I have too many things to do and they all require me to be mentally here 100% of the time.

I have been creating stories since the age of 6. Someday I want to write them down and publish them as books, but first I will need to improve my language and writing skills. It would give me unspeakable joy if people will enjoy my stories as much as I do. I want to succeed, and only by living fully and developing my potential do I have a chance at achieving sucess.

I think the main problem is that my brain is cluttered with so much random stuff that it distracts me from a lot of things in real life. I often involuntarily think about useless/irrelevant things and waste my time. My head is often in the clouds and I make up stories of people who live in an alternate universe (if you will) and lead much more interesting lives than I do.

I also can’t stop thinking about things that have happened or plots of movies I’ve just seen etc. that it borders on obsession. That is a big reason why I rarely watch anything, apart from the obvious waste of time (although I waste my time in other, but less-likely-to-be-obsessive ways).
Once my mind starts gearing up, it becomes so hard to stop it, and this may result in failure to fall asleep within half an hour or a fall in productivity in the daytime.

I want to become a person of action and experience things in my own life rather than living in a world of intangible dreams and obtaining my happiness solely from fantasy stories and insignificant memories of the past. My mind works in irrational ways but somehow I have to control it and persuade myself to pursue the long-term benefits despite the short-term suffering I may have to endure.

What I just wrote seems somewhat confusing to me, and possibly even crazy to any readers out there, but I needed to acknowledge this problem by getting it down in writing.