Over-Functioning
Over-functioning is the habit of doing more than your share, taking responsibility for other people's tasks, feelings, and problems, often to manage your own anxiety about things going wrong.
It tends to look like competence, the dependable one who notices what needs doing and does it. Underneath, over-functioning is often anxiety with a job. Stepping in and handling things settles the worry that comes when you sit with someone else's mess or risk. Acting feels better than waiting, so you act, usually before anyone asks.
The hidden cost is that it keeps other people small. Every time you smooth a problem that was theirs, they get a little less practice carrying their own weight, and you get a little more to carry. In a close relationship this can quietly arrange itself, one person doing too much, the other doing too little, both stuck in it.
For someone who grew up needing to be the capable one, over-functioning can feel like the only safe way to exist. Doing less feels like neglect. Learning to leave space, to let someone struggle a bit and find their own footing, can feel wrong long before it starts to feel like relief.