Username checks out :D
In all seriousness, I don't have a lot of tips for overcoming SI, so I'll leave that for others. But one tip I will give is that when jumping, you should try to go head first. Otherwise you always risk surviving and becoming horrible disfigured/disabled in the process.
Not too long ago there was a guy at Heathrow Airport who committed suicide by jumping the second story, and dead immediately because he dove headfirst. So that's how important it is.
Absolutely DO NOT jump feet first. There are people who have literally survived falling 200+ feet because they landed on their feet, often times only injuring their bottom halves and nothing else, which is not nearly enough to kill you. So you definitely don't want to do that. Always do your best go head first, or even back first for that matter. Anything but the legs.
That's about all I can say for that. Obviously it's your choice, and only you can make that decision, not us. In any case, I wish you the best of luck in finding peace my friend :)
I'm choosing Beachy Head as my location, how about you??