I want to focus more during my workday

I work remotely full time and often get distracted during the day. For the past 12 months, I’ve been at a new job that has been very challenging for me. Although I like the nature of the work, I feel distracted often during the day. I don’t want to be distracted. I want to get through my work tasks quickly. Sometimes I feel like my deadlines don’t give me enough time to do quality work, and I’m afraid of being criticized for it, so I buffer by scrolling my phone, which only puts me further behind. Sometimes I feel like there is no time for rest or to recoup. My schedule is always packed. I dream of a vacation, look outside the window at the changing weather, stop my work to look up things on Google, and start to resent my job. I don’t want to resent my job because it is financially rewarding. I also tell myself I’d get more satisfaction doing something else I’d like more, but I know that’s not true, and I know my brain is just trying to get me to change the circumstance. I’ve listened to my brain when it’s brought up the possibility of changing the circumstance, and I DID change the circumstance, but of course, things were always the same because my thoughts ran in a pattern that made me dissatisfied with the new circumstance. Emotionally, I feel all over the place during the workday, and I don’t want to feel that way any longer. I want to be focused and productive. The model below is the one I want to believe but that I’m having trouble believing.

C: Working on financial analysis
T: I can get this done quickly and well
F: Focused
A: Stay focused until the analysis is done, come up with good insights into my work, have an idea of where I want to go with the analysis, know how to make the right adjustments, don’t fear moving forward, and get more quality work done in less time than I do now
R: More focus during the workday

I think other thoughts are holding me back from adopting the model above, but I need help because I can’t see them yet!