How to talk to concerned student

1.	Show your concern to the student by telling him/her what you observed
2.	Listen non-judgmentally (avoid critical comments or questioning) with interest and care. Don’t be afraid to ask the student directly whether he/she feels themselves not functioning well or have thoughts of harming themselves or others.
3.	Give the student a sense of hope that things can improve with some help.
4.	Introduce the resources available on campus, e.g. Counselling Service to the student.
5.	If the student decides not to see a counsellor, respect his/ her choice and encourage him/her to seek help when they are ready in order to maintain your relationship with him/her.

More tips for dealing with reluctant students:

If the student rejects the idea, you can show your care by asking about their concerns for seeing a counsellor.
If the student has misunderstanding about counselling, you can explain to the student that counsellors meet with students with different kinds of concerns and reassure the student that it is normal to experience some problems during the college years.
Assure the student that asking for help is a sign of strength rather than weakness.
Assure the student that counselling is confidential and it has nothing to do with their academic record.
Sometimes a student is relieved to learn that they can meet with a counsellor on a one-time basis. So you may suggest the student to try it once to see how things go.

Counselling Service 2015 (referenced from guidelines of Counseling Center of UCLA, University of Central Florida, Eastern Kentucky University and North Dakota State University)