Do you think it would actually be worth setting up a Blogspot Blog, and talking about my life and adding Adsense? Would many people listen?
Post great content over an extended period and people will come over time. There are literally millions of personal blogs with people talking about themselves so the competition is tough. If you do create great content and get big, you'll probably want something other than Blogspot however so you can control the domain and retain your PR. Here is an example of a great personal blog: http://thepioneerwoman.com/ She can get comments into the thousands on her posts and they usually run into the hundreds. Good luck
That is what is a blog is all about Firstly think of writing something useful for your visitors which is also of your interest and once it catches up with them, then go for monetising Happy Blogging
My Opinion : If you are looking for good adsense revenue, then you should start with another niche Best Wishes
If you have anything very interesting to say then why don't people attract to your blog? keep writing good and interesting about your life,you will get readers.