Learn to enjoy your presence enough that companionship remains a choice.

If your own presence is enjoyable, companionship becomes something you select rather than something you require. That distinction determines almost everything about how you behave in relationships: how much you tolerate, what you are willing to say, whether you can leave. Needing removes options that choosing preserves.

Build the enjoyment deliberately. Find things you genuinely like doing alone and do them regularly, not as consolation but as a real part of your life. The effect on your relationships is indirect and substantial, because it changes what you are bringing to them.