In reality bitcoin is a commodity, like a house and thinking this way will maybe help you in times like this.
No, you are wrong. Bitcoin is not a commodity, it is a crypto-currency and an asset, that's why it is valuable and tradeable. It's not all assets that are commodities.
So, you bought a house for $1m and a year later someone offers you $900k for it. Will you sell it? Why should you? If you're not in debt, have money to pay your bills, you won't sell it, right?
The bitcoin market is exactly that. It's a bunch of people offering you money for your house. A month ago they were giving you a million, now they're only offering 800k, maybe next week they'll say their last offer is 700k. Don't like the offer - don't sell! I know that my bitcoin is worth more than 100k and I don't care that they now want to pay me 78k. I'll wait for them to come back to their senses and come up with a better offer. At this point I wouldn't be satisfied with anything 5-digit.
The issue I see here is that you can't differentiate between an asset and an investment, the nature of the two also matters. Bitcoin and Real Estate investment are possible because both the property and Bitcoin are assets but their investment nature is not the same. Like stocks, we buy Bitcoin and keep and sell only when it is at a higher price, you don't sell unless you're stressed, the goal is long-term, so it's your choice and loss if you sell cheap.