If you want to write an e-book, but think the task is too difficult, then there are various options available is achieving your goal.
You could get someone else to write it for you, there are people who will write a 5000 word report for around $100. If you want to jump start your product creation then this is a good option.
If the thought of writing say 10000 words is too hard to think about, try writing say 1000 words every day until it is completed.
If you are struggling to come with content there are many places to research material for almost any topic online. Don’t copy the exact text but use it as a way to give you ideas to write something in your own words.
Another way to speed up the process of actually writing or typing is to use a speech to text writing software that will type for you as you speak. This process is about three times as fast as typing depending on you speed.
Once you have your research done you should be able to type around 1000 words I an hour or much less using one of the software available.