What should I write ?

What to write ? I am sure this is the first blog question for someone who has never written before.

I have read a number of blogs, some describe events, some whine, some are irritated, frustrated, some are happy, others sad. Some blogs go into religious discussions, some into culture. What should i write about ?

Maybe I will just write about my personal thoughts, about anything and everything. I am a bit lazy, so lets see when i post next.