You do what is right for you in helping stray animals, then other people see you doing it, and it may motivate them to do it too. If you sway even 1 person to help stray animals because of your own behavior, then you have created a miracle. Then if someone sees that person and does it, then another one might too, and another one. It's how we change the world. And yes, it is slow and you might not see the outcome yourself. Have faith in the process and keep doing what is right for you.