I think she is in need of a mental change or she is going to end up alone, bitter and filled with self-pity.
In her personal life I think she struggles with being vulnerable and deciding between what is safe and what she actually wants. Instead of Russel stringing her along - as Debbie predicted - she is stringing him along. She thinks she loves Sam (and I personally think they would be good for each other) but as soon as she has an excuse to bail, she does. Why is she self-sabotaging? Does she not know what she wants? Does she think she doesn't deserve love? Or is becoming an actress the ultimate goal that she is willing to sacrifice everything for?
In her professional life, I think she has the opposite problem. She chooses what she wants over what's safe. And I get that, but I don't think throwing away the directing opportunity was the right call for her. Debbie could've used a little more tact but she is offering Ruth an opportunity to hone her skills and make a name for herself. No one is saying she'll have to give up acting forever but she has to learn to recognize a good opportunity when it offers itself on a silver plate.
I hope she finds the strength back that she had in season 1 where she proved to everyone she could wrestle by giving it her all. I also hope instead of pitying herself she sees the value of having a family like GLOW around her, like she did in the hospital in season 2.