Most countries don't even have legal euthanasia, and even fewer have it for mental health diagnosis. It's also an unbelievably extensive process. You have to meet with doctors, therapists, psychiatrists, they encourage mediated sessions with family and friends, you have to get tests done. You have to show them that you have A. tried every last treatment you can and it has been unsuccessful and B. you are still in your right state of mind to make this decision. After all of the appointments and therapy and proof of treatment, your case is then reviewed and either approved or denied. Only then do you set a date. I don't know the exact time from, but I believe it takes years to months. If you haven't maxed out on treatment you have no chance.