I love all this.

I have learned to trust my gut. If something feels off, it's because something is wrong / not right. Communicate well. Be kind and mindful with your words and behavior, always (and when you are not kind, an apology goes a long way if you are a generally good person and not abusing the unkindness then apology cycle). Don't be in a relationship for the wrong reasons (for the sake of being in one, for instance).