In all our workshops we repeat this phrase over and over, "If it is not written it will NOT happen." And believe me, I can assure you that this is the case. Whether it is a task you want to accomplish, a goal or a dream to accomplish, if you do not put it in writing it is difficult for your mind to remember.
Your brain has thousands of things to think about, additionally having them in writing will allow you to develop many more things that you will discover next.
Writing your goals forces you to define them clearly, creates a reference point to be able to follow up and also helps you to think and perhaps adjust it, but it is not everything, it also stimulates your creativity as your brain begins to look for creative ideas and thoughts that They are waiting to be released.
I do not know if it happens to you, but when you start writing something, suddenly you get inspiration and start writing thousands of things that sometimes need to be organized since your brain throws them...