Resisting calendaring

Am having such a hard time moving my to do list to my calendar. It’s like I feel strongly i won’t be able to stick to it because I have struggled so much with this in the past. I have accomplished a lot but have also let myself down in the past. And so I don’t do it (calendaring). I am getting things done still but progress is very slow. I also find it challenging because I can only realistically spend 1 hour per day on my business at the monent and am frustrated with how long everything takes and how long at this pace it will take to get to my goal. This keeps me stuck in slow motion, running models feels tedious and like I should just focus on what I need to do in that hour instead… really want to gain momentum again, not sure how to turn this around?