It's obvious you care very much - make sure your son knows how much you love him. Take his pain seriously (use emotional coaching to reflect back your understanding of his feelings - don't argue with him) but also let him know that you know that things change. Young people often have telescope vision - they kill themselves because they don't see a way out and they don't believe anything will ever get better. Tell him over and over again that things do change even if it sometimes takes a long time. Be positive and encouraging - let him know that you believe he can survive these dark days and come out stronger. Affirm that things will improve - he just has to go through this for now for whatever reason. Pray for him. Continue to search out professional help - people never give up looking for the things they really want. Just keep looking. Ultimately you can't keep your son alive but you'll know that you did everything possible.

My daughter tried to kill herself many times before she actually succeeded. We also took her to every doctor and did everything that anyone could possible do but in the end she found a way to do it. We know that she suffered from mental illness - we don't blame her for her death and we don't blame ourselves. She died from depression just like some people die from cancer. Hopefully your son's mood disorder can still be treated. Keep trying. Some people do survive this illness and hopefully your son will be one of them.

Tell him that you love him and that he can trust you. Assure that he is capable of doing so many clever things. Remind of his achievements though minor. Assure him of all that he can do in future and do not panic in front of him. Take him on a family holiday, if possible with a friend too.