How serious are you about your diet?

So I know a few friends who still ate fish and drank sodas. I know one who even drank in the last trimester 😳 ( wasn’t a fiend) but I am curious to know how serious you take it?? I don’t eat fish but I’ll easy salmon. I drink about a soda a day and then water. Guess I’m kinda in the middle? But how serious are you about it??