Feeling lonely and second guessing the level of dissatisfaction in the relationship is normal, very normal around here. If done it myself, I am married to my H with BPD, considering divorce and have had periods of separation over the last few months, my choice. The two ok three things that help me are:
1. Get a teddy bear, sleep with the teddy bear, hug the teddy bear, get sleep, sleep is good!
2. Write a list of things down that really hurt you by your partner, events, incidents or behaviors, keep it in your pocket or wallet.
3. Write in a journal as often as you can 1 thing about you that you like, deserve, want or need. You can use self affirmations. You can write: I deserve not to worry in a relationship that my partner won't seek help for her behaviors or something similar like I am happy when I ride my bicycle though the park. Just start with one or two thoughts. In a few days you'll have enough that when you read them you will feel inspired and have strength to focus on yourself and your own needs/self-esteem. Read or write in this journal everyday, it will strengthen your perception of yourself as well as your options and outlook on your situation. I'm sure, it does that for me too
