To do what is right and just is more acceptable to the Lord than sacrifice.
The type of sacrifice being referred to in this Proverb is probably ritual sacrifice. This would involve killing an animal and not using them for food or materials, in order to show one's commitment to God. I don't understand that concept fully. But it is amazing to me that even in the time of the Proverbs being written, it was recognized that 'sacrifice' does not take the place of doing the right thing. Sometimes doing the right thing involves making a sacrifice, but this is a different concept altogether. In the same way, my giving to the church financially does not take the place of doing the right thing.
Lord God, May I always choose the right thing, always be kind and generous to others, and in this way show my love and commitment to you. Amen