Progress?

I believe I have made some progress on my self control already.
Last night, near to 1 am, I was still waiting on my "artistic apprentice' (LOL) to finish some personal items he was into before working on his horn and hand designs. After a few questions about when he will be ready, I realized that this is something that would over-run my sleep schedule.
Instead of pressuring my friend to hurry so we can complete the drawing aid, I used understanding to increase my empathy and sympathy. Normally, I would be upset, and tell myself,"He knows I work long shifts, why isn't he concerned about my time." This time, however, I was able to remind myself that he also works long hours, and is a lot more social than I am. Also, I know his wife does not sleep early like mine does, so he was probably busy talking to her as well. Understanding these items allowed me to empathize with his need for personal time, and sympathize with his need to unwind. This allowed me to control myself and my reaction. I sent him a polite (I think) message, letting him know it was late and I would work with him on another date for his art work.
I hope I handled that well.
Any comments or suggestions?