Interesting question, because considering the times; not to be cliché, it is extremely presumptuous to assume you can be “certain” about everything. I learnt this lesson long before the world took a turn (so to speak) for context , this is not my “worst” year. However, I do sympathize.
With that being said what life has taught me I can be certain about is to keep on dreaming.
And remember to forgive yourself for the things you’ve moved on from. I am certain about that and this way you curb the depression that comes with disappointment.
So what am I unsure of?