Writers must write, right?

So I started this blog so I could write. As you may see, I haven't really done that. I have lots of great ideas when I am walking around or driving, a million different places but sitting at a computer. But  I know I want to write. So how do I solve this dilemma? I will do the most cliche thing that every article about writers has ever said. I am just gonna force myself to write. I'm gonna sit down at this computer and just write. About what, I have no idea. And fair warning, it's probably gonna suck.