What to do when you didn’t honour your calendar

I planned out my week, and the third day in I didn’t follow what I had planned out to reach my goal. I started an hour late, and then re-grouped and got about 60% of the work done that I had planned to do. I let it take longer than it needed to. I don’t know what thoughts to think. Part of me is super proud that I showed up and did some of the work but part of me thinks I’m making excuses. It feels like I am punishing myself if I make myself work tonight to get it done, but Im worried about putting it off for another day and falling back into my old habits of not getting things done. Do you ever not honour your calendar and how do you re arrange things/think about it to get it done?