Most people can be helped in getting through their moment of crisis if they have someone who will spend time with them, listen, take them seriously and help them talk about their thoughts and feelings. Almost every suicidal crisis has at its center a strong ambivalence: "I can't handle the pain anymore," but not necessarily, "I want to be dead forever!" What most suicidal people want is not to be dead but some way to get through the terrible pain they are experiencing and someone they can turn to during those terrible moments of fear and desperation.

Having someone to talk to can make a big difference. However, you may need to be persistent before they are willing to talk. Talking about suicide or suicidal thoughts will not push someone to kill themselves. It is also not true that people who talk about killing themselves will not actually try it. Take any expressed intention of suicide very seriously. While you may not be able to solve these problems for a friend or classmate, you may be able to help the person find someone who can help.

Answer:

understand the situation how did this happened so you can find the the key to prevent him/her from commiting suicide

try making her/him calm first like approaching the person slowly