Have you ever sat and thought about how the end game of life is possibly just to live it?
Maybe there is no reason to be concerned with whatever goes on in your life; the whole point might be to experience, and that is all.

So if you are miserable, depressed, anxious, or even at peace or happy, maybe the whole issue you are missing that drives you forward, is that your objective is as clear as simply existing and getting to the end without forgetting that the point was the journey, the goal was the life and the events and mental perceptions in between were all just biproducts of a greater purpose; existing at all.

So you have done what you were supposed to by being here at all.

God loves the one who knows he is without requirement to know more than he needs to.

If there is no god to you, then the simple acknowledgement that you have fulfilled your purpose, whatever you think or do, should be enough to bring you calm.

If that does not work to establish peace, you haven't understood it, you think too much, or you do not think enough.