Is it unhealthy to write about your life and goals?

I’ve had urges to just write about what I want to see in the future; children’s names, what kind of car I might get, jobs I’d might have, where I want my current relationship to go etc. and I was curious if this behavior was in any way going to be detrimental to me. Sure, I might have expectations that are over the top, and that might lead to disappointment, but other than that, is it “bad”?