Welcome and I'm sorry that you've gone through some difficult things lately, though it sounds like you're well on your way to figuring out how to prevent things like that from happening in the future. With that said, I would caution against getting a tattoo for the reasons you expressed in your post. I understand the idea of wanting to have a permanent reminder on you, but tattoos don't really work like that. I think you should get a tattoo because you want a tattoo, because you like tattoos and the art of them, not because you think that tattoos will make you a better person.