Best way is quickly; but, have concern for who will find you. Make sure you will be alone for at least 12 hours to make sure you are dead. There is pain involved. So, do it quickly. A gun to the right part of head. Massive drugs of the right type; problem is getting the right type. Knife if you can stand the pain to the heart. Cutting wrists is slow and if someone saves you results in damage. Good luck! :>) !!