Making healthy choices is easier when they align with what motivates a person. Some people are motivated by a goal, others by enjoyment,group activities or clear explanations.

D-style

Make it a challenge.
Set a clear goal, allow some room for personal choices and make progress clearly visible.

I-style

Make it fun and sociable.
Being active, laughing and connecting with others works better than rules or warnings.

S-style

Make it achievable and familiar.
Give clear instructions; step-by-step guidance and positive encouragement help to maintain motivation.

C-style

Make it clear with facts and backing.
Show what healthy behaviour brings and make the steps concrete and measurable.