What's the root of your anxiety? Do you workout, eat healthy and sleep enough? You could go to the doctor and make a blood test to see if you lack anything like Magnesium,Vitamins etc.. After you made sure it doesn't have physical causes you should ask yourself what makes you anxious and go from there. You can go see a psychiatrist or slowly expose yourself to your fears which will desensitize them. And just ask yourself why you are anxious you will come to the conclusion that it doesnt make sense. If you are unhappy with something in your life try to think realistically how you can improve or change it. It might never be perfect but you can make at least the best out of it. Self pitying won't change anything and if you are willing to suicide and be dead for all eternity why don't you at least try to make the best out of your life. You will be dead forever anyway so why not live for another 40-50 year and see what happens. Your dreams might not become reality but I guarantee you there are ways to improve your life to the point where you can be content with your life because you know you are doing your best. Something that helped me to appreciate my life is reminding me there are other people who are in even worse situations. I mean I definitely wouldn't want to be part in one of these cartel or prison torture videos on liveleak. You just have to find a purpose, if you think your life is worthless why don't you dedicate it to helping other humans/animals for example.