Go as far away from your environment as possible.
Go as far away from people you know.
Go to third world country where nobody knows you and stay there for couple of years.
You will find yourself completely changed, you will see world and life differently you basically will be reborn.
We are deeply conditioned by our environment and people who surround us. To start a new life you have to break out of present limitations, you have to breath fresh air in and feel different vibes.
When I lived in Ukraine (I am Ukrainian) I met several Americans who worked there with Peace Corps organization, those who couldn’t fit in American society and were depressed and even suicidal. Now those people happily married, have kids, good jobs and so on, some of them returned back to US, some decided to stay for good in Ukraine, but all of them are happy people now. What caused those drastic changes?
I think first reason was relocation to a third world country. You can’t think about suicide when you are surrounded by people who never think about it (we all know that people in poor countries more immune to suicide thoughts, they are too busy with their general survival). Different atmosphere, different vibes and energy. Second reason, your old outlook and conditioning disappear just because it is not valid anymore in a new environment. Third reason, people from different culture would see you absolutely differently which would change your self-image very much. People in third world countries mentally are much closer to each other, I guess because hardship and difficulties are easier to overcome together ( instinct of survival?) so you will never feel alone and find lots of new good friends.
So, before you leave this world jump into another adventure where you will realize how much you are valued, loved and needed. Learn absolutely different life that you never experienced before and the outcome may surprise you so much. Google for “Peace Corps” and find out more about the organization. I wish you much luck and a long, happy and rewarding life