Git-R-Done

I've come to realize that I spend far too much of my day doing nothing. Since I only have four classes and I am yet without employment, I often find myself filling my boredom with useless putzing about. Though it may seem as though I have no dreams or aspirations, I do. They just aren't very concrete or definitive in form. That doesn't mean they aren't still floating around in the back of my noggin. This has become frustrating. So, why not spend my oodles of time figuring these things out and doing something about it.
The problem is, when I do have a known ambition, I don't know how to achieve such goals. I've always wanted to write a book. So why not begin to delve in that, instead of endlessly perusing the web. The trouble lies in where to begin. I haven't decided on the type of book. I have ideas, but have not yet determined what I want to include. There is also the fear in applying myself so fully in something that no one will be interested in. Can we say fear of failure? However, I vow to write more, even if it's not yet the beginnings of a masterpiece, and play solitaire less.
Secondary thought: What is a so-called math major doing writing a book?
Thirdary thought: I should "work the bod" more often also.