Why do people commit suicide? No one knows the future. So, who's to say that things won't get better tomorrow? But, one would never know, if they take their own life. Also, how would people ever know this if they stop trying? Besides, God would not allow you to go through anything that you can not overcome. Many of the times, you do not know how much you can overcome until a situation requires to be overcame. God has prepared you to overcome any situation that you experience. If you can not overcome a situation, God will not let you experience it. Knowing this requires faith.
Death is not always connected to suicide. Yet, giving up is always connected to suicide. There are many ways to reach better days. I feel that the fear of death, or failure, is the main cause of suicide. Yet, with hard work, it can be overcame. I ask, 'How bad do you want it? Is your fear bigger than your faith? Unlearn.