Aggressively eliminate from your life everything that causes the slightest mental distress. Replace everything that has to it even a hint of undesirable emotions.

I once read about a girl who left work to buy a plane ticket to Australia to get away from her abusive boyfriend, and started her life from scratch. Being in an abusive relationship myself, I envied her.

One million seconds is eleven days. One billion seconds is 31 years. If you have just one second to spend with a person, you won't run out of the population for 248 whole years. There is no such thing as an irreplaceable person, no matter if they're your father, mother, best friend, wife, or husband.

Pain and trauma won't really go away, but they won't get bigger. You, however, can. One day you will be dying, and realizing at that moment that you didn't live the life you wanted to live, while knowing it's too late now, is the scariest thing that can happen to a human being. As you fade away, the sense of time will slip, and whatever you're feeling will stretch to eternity. Make it an eternity of calm happiness, and not an eternity of doubt and sorrow.

Make sure that when this moment comes, you're ready and comfortable with the life you lived. At least be confident it was YOUR life, and not someone else's.

This goes to everyone, both mentally/physically ill and healthy, and to both neurotypical and on the spectrum.