I read somewhere... that the world or lets say the life we live is like a school or a university. In the spirit world, the soul chooses his role, his lessons, his life, his experiences... sometimes even his family.
Death is like graduating from this school, and perhaps moving on to a higher plane or realm. It is said that these lessons can be learnt in the spirit world as well. But the process is much longer.
Suicide on the other hand, is like dropping out from school because you couldnt cope with the lessons you chose for yourself. So what happens to the soul who commits suicide? Exactly what happens when you fail in school. You are made to repeat your lessons or class. In the spiritual sense you are made to repeat the life that you opted out of, u end up going through all the bad stuff that you ran away from, and most of the times the lessons are harsher. So, no matter how harsh life is to you, deal with it. You dont wanna come back for the same hell, you've been running away from...