Welfare and sacrifice, both are worthy ethics. But there is a huge difference in what they mean, and it depends upon personal choice what ethical mindset to follow.

Welfare is not to seek harm for anyone for the sake of your interests. 

Sacrifice is to seek to benefit others even at the expense of harming your interests.

There is no right choice to select from. But remember: Make the choice that you will not regret once you look back at your decisions and choice.