There is a cascade effect required for action to create change. A series of dominoes has to fall, and keep falling, for any lasting impact to be made. It’s the difference, in a way, between pushing a ball uphill and pushing it downhill; in the latter case, soon the ball will start rolling without you.
If you take an action that no one responds to, including yourself, change won’t result. But if you act, and someone else reacts, and then someone else reacts to that (and any of these people can be you, again and again) – that’s the formula for change.
It’s not just something happening. It’s a chain reaction. Sometimes you have to make a lot of things happen first – you have to rub those two sticks together for a long time before you get the spark that ignites the whole pile of wood. So keep at it.