I think i have stress and anxiety, i quickly get angry and i act out of impulse which normally isn't good, i over think things and have suicidal thought, what can i do?

Help is available: A person who has suicidal ideations (thoughts or plans), attempts, or gestures needs medical evaluation and treatment right away. The recommended way to get treatment is to visit an emergency room, by ambulance or by having a companion drive. In the US, the emergency phone number for an ambulance is 911. One can also find suicide prevention hotline numbers online, for her local area.