Then maybe that is where you must bring your optimism first.
This world does not need to be fixed.
What if this world, in all its turmoil and writhing, was in the right place for where it needs to be in this place and time in its evolution? What if from the biggest picture that is possible, all was well?
That may be a big pill to swallow.
What if all could be well all the time? And you could just be responsible for your happiness and well-being no matter what the circumstances or conditions around you?
What if you being responsible for your joy and well-being in turn inspired every person you encountered to be joyful and responsible for their well-being?
(Watch your cynicism. Well-meaning though it is, it can crop up right here. Be vigilant. The definition of ‘vigilant’? Awake during normal sleeping hours.)