The cost of gaining your PhD might be an enormous amount of study, a non-existent social life, decreased fitness, some back pain and a crap load of your time. The cost of repairing a damaged relationship might be an apology, some humility, some courage, some behavioural change and some quality communication. The cost of your new car could be longer hours at work, less partying and more pressure with your new lease payments. The cost of building a tree house for your kids might be an entire weekend, some sweat, some physical effort, some building materials and maybe a few scratches. The cost of building your best body might be a not-always-fun combination of dietary, exercise and lifestyle changes.
The fact everything comes at a cost is not in question.
What is in question is the price we’re each prepared to pay.