You know, I bet about now, you're thinking that I'm a pretty dreary guy, with all this talk about the limits to our time on Earth. Well, cheer up! Why? Because we're here now! And that means we have the opportunity to make our lives as exciting and fulfilling as we possibly can. And we can start right now. All it takes is making choices that bring us happiness instead of sadness... Choices that have us hanging out with the people we have fun with, as opposed to the people we feel bad around. It's really a question of maximizing our enjoyment on a day to day basis. And if that sounds simple, it kind of is.
Why not listen to that voice in your head, but then make a choice as to what you want to do. Maybe today is the day we can override those negative thoughts. The day we listen to the voice in our head, acknowledge it, but then do the things we really want to do. After all, with the time we have here on Earth, we should do whatever we can to have the most fulfilling time possible!