Reading this well written blog post on making smaller goals for writing, rang a lot of bells with advice I often give when composing new website content.
Bite-Size Resolutions by Moira Allen talks about the approach she uses for writing her books, but the technique can be applied to writing content for your website. Rather than struggle to write the text for your website (or page) in one go, and struggle to get it done, aim to write just a few paragraphs per day or maybe a page per week.
The bite sized chunks will make it seem a lot easier and more enjoyable.