How do I avoid a toxic relationship after growing up in an abusive household?

I 27M was raised in an abusive household and really do not want to fall into a toxic relationship. To sum up quickly, mom was a narcissist and kind of a sociopath. I have gotten therapy, taken care of a lot of my issues but I really was wondering if there was any advice I could get in avoiding winding up with another abuser. As it stands I am pretty wary of others and take a long time to warm up to people, that being said, any tips for spotting and avoiding a toxic relationship, red flags to look out for etc.