Reminding people about their core values before any advice is provided, makes them more receptive towards it.

When the person thinks about their core values, an area of their brain called the Ventromedial Prefrontal Cortex (VMPC) gets activated, making them take some tangible action towards your advice. This pre-suasion before we influence any person (for their own good) is important and essential if we want them to follow genuine advice.