Welcome to PC. I was also amensly relieved when I was diagnosed in 2011.
The divorce rate in the United States is around 50%, BPD or no. So I wouldn't put too much stock into literature that is designed to be inflamitory.
Recovery through DBT is also completely possible. I only did part of a DBT program and it is responsible for the few good coping skills I do have as an adult.
You're not alone.