Attitude adjustment?

I was getting close to finishing up work tonight, and customers just kept trickling in! I was getting rather annoyed until there was a break. But then two more ladies came in and my frustration built. Didn't they know I just wanted to go home? Of course, I was very friendly and courteous when they order, but my heart's attitude wasn't in the best shape. The time came to close down, and they were still sitting there. I don't even remember how the subject came up, but I found out that the baby with them was one sister's and the other sister is almost to her due date. So that got me talking about my sister who just yesterday had her very first baby! (Psst! It's a boy!) The more we talked the happier I was. I found out that more of the sisters have very large families, and have used midwives multiple times (like my sister did). It was truly such a blessing to chat with them and hear about their experiences with midwives and who they've worked with here in this area.  I know it's far in the future, but I'm pretty sure that I will want to use a midwife as well. I just see so many benefits to going that route. So again, having the chance to speak with these women was encouraging. It showed me that the things that make me frustrated and annoyed, those things God can use to bless me. Hopefully that will remind me to think of the bright side of every interaction.