You killing yourself would fuck up the lives of the people who love you and make them sad. In that sense, your life doesn't really belong to you; they're the ones who will suffer if you die.
Please don't do it. I know it's hard. And having a mental condition is tiring. You're a rock in the sand slowly being worn down by the waves. They never stop. And all of your fellow rocks are just past the high tide mark.
It's possible to be supportive and try to keep someone alive as long as possible without making them feel like they're slaved to someone else's desires. I think everyone deserves to feel autonomous.
I want to kill myself. I've wanted to end my wretched life for a long time now. But I know that if I did this it would destroy my family. I love my mother, father and sister and I don't want to do this horrible thing to them. So, in my mind, my only option is to limp onward.
It is 100% my decision. I've decided to make the less selfish choice.