Make friends with other parents. Not only is it nice to talk with others who are sharing the same gym experiences as you, but parents can support you in other ways - providing rides, snacks, and emotional support for your gymnast. Of course, this may be difficult in some situations, but I honestly wouldn't know what I would do without my parent network.
I echo many of the sentiments in this article and currently practice them. Gymnastics is supposed to be FUN, and I hope it truly is for you and your gymnasts.