Everything happens for a reason, so you learn. With every change, you gain experience; you learn how to let go. You learn how to appreciate beauties in this world. Things happen to make you improved, a better version of yourself. Sometimes, something happen to protect you from evil.
I agree to this statement by Marilyn Monroe who says:
“I believe that everything happens for a reason. People change so that you can learn to let go, things go wrong so that you appreciate them when they’re right, you believe lies so you eventually learn to trust no one but yourself, and sometimes good things fall apart so better things can fall together.”