A good coach will avoid absolutes such as Must, Never and Always.

For example, instead of saying “You always drive too fast around the yard” the coach will say “I noticed you were traveling rather quickly around that dangerous corner.“

A good coach will use “I” statements instead of “you” statements.  For example “You are being risky” sounds accusatory where “I think that behavior may put you in danger” sounds caring.

A good coach will focus on behavior not the personal attributes of the individual.  Instead of saying “You are irresponsible for not using your seatbelt.  He/she might say “I see you are not wearing your seatbelt.  Why?”