When I first started on this lifestyle change, I did count everything - and I'm glad I did!! I was trying to eat low fat food which is great, but had no idea that some low fat foods can be crazy high in calories. I also learnt that you don't have to deny yourself treats if it's in your calorie allowance (as well as learning about some not so naughty treats - ie choc billabong ice creams, 98% fat free and under 100 cals!).
I obsessed about it for a good couple of months, but now that I feel more confident and educated in whats actually in the food I eat, I don't do it so much. I now know to check the energy count on food as well as the fat content and can work it out myself!!