Yes, if your blog is not relevant to the subject of your Hub. You are not allowed to have links to unrelated content.
Note that a reciprocal link (having a link on your blog to your Hub, and a link from your Hub to your blog) is not of much value in Google's eyes. It's better to decide which is more important, your Hubs or your blog, and link on one direction only.
Looking at your blog, which is on random subjects, I'm guessing you are not in the business of making money from it, so perhaps that's not an issue.