Vocabulary

I'm suddenly envious of others. I can't seems to expend my vocabulary. I was reading other's blog last 5 minutes and I wonder why theirs sounds like adults and why mine don't. I notice that all of my blog post, I seems to recycle the vocabularies. Nothing new. How can I improve my English then?

I always have the problem of can't find the exact suitable word for what I want to describe. Maybe the word doesn't exist in English? I don't know. Sometimes I make me feel a little frustrated. =( I need to read dictionaries as bedtime story then?

P.S.: This is a random sudden thought. Don't mind if you don't get the point. I don't think it even have one.