Doesn't really matter what's wrong with you. If you haven't done all you're supposed to, that's you rejecting God, by rejecting God, you don't get in to Heaven.

Also, stress and anguish are a persons own personal problems, not a mental illness.

But that is a value judgment, since there is no definition for insanity and one literally cannot know if said "mentally ill" suicidal person was capable of reason since that can only be established if the person is alive to be analyzed.

There are really few cases when we actually know someone gets into heaven or not anyway. (sainthood)

@ Petray- They hit us with three foot long metal rulers when we were smartasses. And I didn't intend on getting into a huge argument on the matter back when I made the post you were talking about. (about the mental stuff)

If everyone had that attitude, we'd still be hunter-gatherers.

Only after intellectual development came societal, technological and practical development.

To be honest, It is fairly expected to feel down about having two of your friends commit suicide. If he didn't feel sad about it, something would be wrong. Mourning and woe are natural methods of which help you to grieve and thus, move on.

Don't try and rush him or give him "advice". It would the equivalent of smashing open a chrysalis. Time is the greatest therapist of all.