Isn't what you describe pretty much everyone unless you're a person who simply enjoys mundane things because they're "safe"? I realize that statement doesn't help you at all, however, I guess I'm just saying that what you describe isn't unusual, the cure is to find a tangent on the task that makes it interesting. A two page writing assignment in and of itself isn't interesting, however, if your child has a passion for Dragons and can write about them then suddenly it might not only keep his focus but he may be delighted with it. Passion learning is the highest form of learning, work with him to interject whenever possible his passions into what would otherwise seem to be mundane tasks.