1. Investing what you can afford: this means that you're buying an amount of Bitcoin or any other asset of your choice that fits your level of wealth. It could be that if you're earning 200k for instance, the amount of Bitcoin you can afford to buy at every pay period could be 50k while the remaining 150k can serve your other needs. It's not as though you're throwing the 50k away but that you're setting 50k out such that if you continue doing that for months you should have an investment somewhere either in Bitcoin or another asset of your choice
You should first make up your mind that you want to invest in Bitcoin but it is recommended for you that it may not be a good decision to invest the entire disposable money that you have after meeting your daily needs after earning every month. The decision to deposit bitcoins every month with full amount of disposable income is definitely a good one but it is more important to have assets or cash that you may need urgently because suppose you earn $200 per month $150 is for daily household expenses and the remaining $50 is the entire amount. If you keep your bitcoins as a deposit, you won't be able to run your deposit for long unless you have an alternative currency to meet urgent needs. If you have an emergency fund system, you can aggressively accumulate bitcoins for your emergency and long-term investments.
2. Investing what you can afford to lose: this means that you're using your money to buy something that you can lose at any time. If that's the case, it means it will be unwise for someone who's earning 200k per month to keep investing 40k for multiple years.
None of your assets are as safe as you might think. In an era of inflation, the value of each of your assets gradually declines, which you may lose or lose over time. Each of your investments tends to lose be it real assets or crypto. This is how you should make your mindset. But Bitcoin is an asset that can provide more guaranteed profits than other assets. Although Bitcoin is volatile, its trustworthiness has been proven time and again over the years and you can keep your investment confidence in Bitcoin deposits for a long time. Holding.