[throwaway2333]

A persistent sense of fulfilment -- one that makes you feel like everything is going to be alright.

There's no need to keep on searching. You have everything you'll ever need right here.

[astura]

Spot on, "persistent sense of fulfilment" exactly the way I feel about being married. Thanks for putting it into words for me.

I'll also add - a feeling of stability I didn't think was possible for me (mega high anxiety) to experience.