Time after time after time, Jesus points out exactly what is necessary to obtain forgivesness. In order to obtain forgiveness, one must practice forgiveness.
Even in the Lord’s prayer we recognize that we are forgiven in the same manner as we forgive others.
Regarding “Blaspheming the Holy Spirit.” Jesus made the statement that those who do so “can never be forgiven and carry the sin without end.” This was said in regard to those who looked at Jesus and said “He is possessed by an evil spirit.”
In seeing evil in the person of Jesus they are showing, not only that they are totally out of touch with reality, but they are condemning those that find good in Jesus. Thus they earn God’s condemnation. Their only hope will be to realize and acknowledge that, in fact, Jesus was the Promised One of their faith.
Getting back to your original post, every suicide is a great tragedy. A person caught up in difficult circumstances, failing, for a moment at least, to find enough good in living. We should not think at all that somehow, by taking that step, they have somehow committed a crime greater than anything most of us could ever imagine. In fact, they are not at all different from the rest of us. We will all meet some kind of end. Whatever that end, our ability to obtain forgiveness will depend on how well we have practiced forgiveness during our lives.
peace
-Jim