Writing Blocked

Having multiple blogs and article directories to write for, I sometimes find it difficult to start a blog post or article. Sometimes I have trouble just constructing an informal email. What causes this? Lack of motivation? Lack of ideas? No, just blocked. What exactly is blocked? You have ideas and you can write endlessly but none of it sounds good enough to publish. How does one overcome this blockage? My experience has shown that if you continue to write, even if you don't like it and let it set for a day or two you will find that the article you wrote isn't that bad and should be shared. The main thing is to get writing by whatever means necessary. Read a newspaper, peruse CNN.com or any other news site, look over previous posts or review other blogs and articles to get ideas (ideas not articles and blog posts, plagiarism is a big no no). Sometimes I just don't feel like writing so I take a walk, a long walk something on the order of 5 miles or so to get the creative juices flowing. Honestly, most of the time I only have sore feet to show for my effort but I do usually come up with one or two ideas worth pursuing. In the end, the fact that writing is a passion of mine I pursue it no matter what the method so that I can share my ideas and hopefully at least entertain someone if just for a moment.