Research Proposal

I’ve encountered a few difficulties while trying to come up with my research proposal. The first difficulty was trying to focus on something relevant and to try to elaborate the topic clear enough. As the topic which I’ve chosen is like there are so many things to talk about it was hard to stay on track. I did not use any specific strategies. I just did some research on my topic to see if I would be able to write about 5-8 pages on it. One question I have is how many many idea or points should we have and how much to write on each?