I have been best friends with this girl for 12 years, but recently, our friendship has been stressful. She complains all the time, she hates her life, and she gets fustrated over everything. Everything she says seems to annoy me. I also feel like I annoy her because I ignore her stupid comments and try to give her constructive criticism when she drives because she is a horrible driver. I really don't want to hang out with her anymore. What should I do?