Pain happens, but suffering is optional. When pain comes, make use of the experience, but do not wallow in it.
When you accidentally place your finger in a flame, it is supposed to hurt just long enough for you to pull it out.
If you think there is value in keeping it there, you will be a crispy critter. Pain is a minor element of life, unless you are indulging it.
Then it becomes suffering. Get the message and then get on with your life, which is far more about joy than sorrow.
If you are not living with a whole heart now, the end of the world poses no threat; your life is already gone. Life is only as valuable as our presence to enjoy it. To miss the beauty of the moment because you are preparing to protect yourself from the next one, is to trade a precious gem for a cheap trinket.
Nothing in the outer world makes you feel any way. You decide what you want to feel, and then use outer people and events as permission slips to execute your feeling agenda.
I love the balls-to-the-walls rule-breaking approach the Beatles had in the studio (which I emulate), although I don't try to make my songs "sound" like their songs. But every time I crank a knob of some piece of equipment, or plug an instrument into the "wrong" amp/effect, I am channeling the Beatles.