Health

Is talking to self in public normal?

Dear doctor; I often catch myself talking to myself. I was told it happened even when young. Just why would I be talking to myself on the road? I have seen people with the habit do all sorts of weird and embarrassing things such as arguing and gesticulating widely to themselves on the road. I worry that I could be like them. Is this habit a mental health issue and can it be done away with?
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Times Reporter