We think things we would rather not have happen, seem to come out of the blue for apparently no reason, but that is never true. There is always a reason, but we may not be able to perceive it from our limited, human, 3D perspective that takes into account only this lifetime, from birth to the present moment. But you are so much more than this body and identity; you are Spirit. Your Soul, that knows all about your previous incarnations on earth as a human, and also all about who you were before you ever became a human, from the inception of your individuated Soul aeons ago, down to all your future lives when you return to being Spirit again. Everything has a reason for existence, and it is always to move you forward to higher realities, which you can't even imagine from your present perspective. Your best bet is to acknowledge you don't know everything, and accept all situations as an opportunity for you to become a better version of yourself.