In care in so much that i pay attention to how much i've eaten in a day, but i'm not that fussed about what i've easten necessarily as long as it's within the sensible limits of how much i should eat in a day. For example, i'm perfectly fine to have a kfc box meal (~950 calories since i always have a sugar free version of a drink), no real issue there, as long as i then don't have another meal just as large in the day
I generally eat 'healthy' enough to never get ill (not even had a sniffle in the last year for example, despite my family all doing nothing but coughing and sneezing

), the main thing is that i blimp out if i eat all that much (despite doing plenty of walking, but i suppose i still have an office job, so i have to sit for long periods a day) so i have to pay attention to overall calories. However, i'm good at it, so i don't 'count' calories arduously, i just have a good feeling for what everything is 'worth' and it makes it fairly easy.