Nothing wrong with a gift to yourself now and then
Once I prioritized having lunch during the weekend (I had a full-day course, both days) over a therapy session. But I let my T know ahead of time as we agreed at the beginning, so he wasn't inconvenienced. I also didn't feel like I had to let him know why I couldn't make it to session. Had he asked, I would have been honest; but he didn't ask so I just enjoyed my food and full stomach and saw him the next week.