The right thing can be hard to define, so I’ll put it another way: do what you believe is right and in line with your values and moral code. It may not be what others would do but we all have to be true to ourselves.
Never allow others to talk you into what feels uncomfortable for you or moves you away from being yourself.
If you have someone in your life that does this, think about it before it comes up again. Make a note of a few things you can say to that person that will stop them before the conversation moves on further and you know the longer they go on, the more likely it is they’ll talk you around to their way of think.
Always remember NO is a full sentence and a full statement. you owe nobody an explanation for your decisions.
Finally, if these types of people are sucking your dry Why be with them in the first place, move on with your life.