An amount that is to be invested in Bitcoin shouldn't be an amount that is meant for other things because there will also be needs in the family that's why one should have s spare money that should be used for investment only, coming to the forum there has been a popular saying that one should invest with an amount that he or she is willing to lose not just because the investor is losing the money but because it will help the investor not to put so much trust in the amount because it will not be helpful to his mental health. Always have an amount set aside for other things and don't use all your money for investment it will save you the stress of running around to pull out your money when there are emergencies in the family. Have a stable source of income if you must be a good investor and know the amount to use for your investment.
Yes, in order to invest in Bitcoin one should not invest more money than one can afford to lose. Now if you invest more money than you can afford to lose then it will be risky for you to hold the investment for long. If you invest with what you can afford to lose, you don't need to sell bitcoins urgently. Besides, money should be saved for emergency use. Now I never invest more money than I can afford to lose. I invest as much as I can. Besides, I have a separate fund for emergency needs. I invest safely, because I don't need to sell bitcoins for urgent needs. However, the price of bitcoin has dropped a bit so no one will be disappointed here, buy and hold bitcoin.
happy new year