I honestly never found anyone’s support or advice useful in regards to deciding to leave a relationship/marriage. I always did it and shared after because it was no use otherwise. I’d seek support after if I needed it.

I’d not confide in family, it’s actually not recommended to share with family when having marital issues especially if you feel your partner doesn’t treat you right. Your marriage might survive and your spouse might improve but your family will never look at him the same and it will contribute to disconnect in a family. Especially with parents. If I knew someone yelled at my daughter I’d have hard time sitting across holiday table from him for years to come. They are better off not knowing at the moment (unless situation is extreme and they need to interfere)

I agree that leaving a relationship/marriage is a lonely thing because you are on your own with your decisions.