"NVC" and Aikido (and perhaps other non-violent self-defense practices) have been great for self-defense, protecting families and loved ones:

Aikido - Wikipedia

The proceeding is excerpted from: https://www.shortform.com/blog/nvc-conflict-resolution/

"The NVC conflict resolution process has five steps. (As noted, the first two steps are reversible—the important thing is to focus on giving everyone a chance to express their needs before moving on to solutions.)

1. Express your own needs. 

2. Identify the other person’s needs (this can also be done before expressing your own needs).

3. Verify that both of you accurately understand each other’s needs.

4. Provide empathy.

5. Propose strategies that meet everyone’s needs."

For more "deets", details, you are welcome to read further here: https://www.shortform.com/blog/nvc-conflict-resolution/