What should one do who feels tightness in their chest and a desire to commit suicide, and sees that acts of kindness are worthless?

Whoever contemplates suicide must abandon it, for it is forbidden and among the gravest of major sins. Happiness is achieved by fleeing to Allah, sincere repentance, drawing near to Him, following His law, and abstaining from disobeying Him. Worry and sorrow are often a result of sins. To escape distress, it is recommended to recite the well-known supplication: "O Allah, I am Your slave..." and to frequently say: "O Allah, I seek refuge in You from worry and sorrow..." Among the reasons for inner peace are: Tawhid (definition) (monotheism), the light of faith, beneficial knowledge, turning to Allah and loving Him, continuous remembrance of Him, and showing kindness to creation.