I'm calm about it now because I've had years to reflect and learn. I began in 2013 buying small sums of bitcoin around ~$50. I amassed ~$500k by 2017, the most I had ever seen in my life, and throughout the year I made some profitable trades on btc-e.com. I had a competitive advantage on that platform because my orders would be filled prior to the blocks those transactions would be in. btc-e was seized by US authorities in July, but much of their funds were already gone.
This was entirely my failure. What did I learn?
* diversify crypto holdings (such as OP's hot and cold wallets)
* diversify outside of crypto
* use regulated platforms (traditionally these are banks)
* understand fundamentals (I was so painfully naive)
* help others avoid these pitfalls (if I had a single friend I trusted to disclose my holdings, I'd almost certainly have made better choices)
I just responded to another comment below, which you might find helpful https://news.ycombinator.com/item?id=28910361. The foundational elements a blockchain provides - namely transparency and ownership of digital assets - are absolutely critical to our future as a society.
Crypto in its current forms is mostly noise, but there are also really pivotal things being build by people I choose to trust far more than the World Economic Forum.