I understand how you feel when you say "a price to pay." Remind yourself that you have recognized that you want to improve your health and you are taking action to establish healthier lifestyle behaviors, and behavior change is difficult! If you ever find yourself in doubt or in need of motivation, maybe asking yourself this question will help: How would your life be different if you are 100% successful at meeting your goals?
Also, I've been wondering, how do you measure your ketones?