Who the fuck do you think you are? You know shit when it comes to psychological disorders. Mental depression and anxiety are not emotions and often require professional help in order to overcome them. Maybe you haven't dealt with these conditions before in your life, but its a hell of a lot more than being "sad". The chemicals in the brain are actually impairing the body's functionality. It frequently becomes so imbalanced and coupled with high-stress or emotionally damaging events that it may result in the person committing suicide. I don't care how you view this, but when someone is pushed beyond their natural instinct and the body accepts death above suffering, it's not just a matter of "manning up".
Agnus Dei, qui tollis peccata mundi, miserere nobis...
Agnus Dei, qui tollis peccata mundi, dona nobis pacem.