The slightest mention of this subject to people who are never counting calories is a look of your going to far or your just crazy! I used to think the same until I actually did it, and more importantly see all my hard work at the gym start to pay off in performance and my physique.
Counting calories has never been easier
Firstly with apps like Myfitnnesspal, which are free, its actually incredibly easy. The app remembers all the food your have logged so after a week or so you just have to click on meals and not all the ingredients (it can also read barcodes so you don’t even have to type).
As I have meet some serious resistance to this topic I actually suggest just counting the calories for a week before moving onto the next stage of staying with the perimeters of your macronutrients (Carbohydrates, Fats and Proteins). Your macronutrients (macros) are incredibly important. For example you could stay within your calories and just eat fast food. But in reality, you would probably gain weight (in fat) as you would be consuming pronominally fats and neglecting carbs and protein.
In my opinion, counting calories and staying within your macros actually make it easier to stay on track and takes the worry out of nutrition. It empowers you to know your doing everything right and all you have to do is focus on making every training day count! Counting calories only needs to be done for 2 to 3 months. You will go back to it again but after this time you will have a much improved understanding of what is going into your body and your be able to guesstimate with surprising accuracy!