There are many people who invest in bitcoins but withdraw money from that invested bitcoins to feed their family money I think their bitcoin investment is not worth it. So all of us bitcoin investors should keep in mind that when we need money we don't have to withdraw from our bitcoin investment.
This is because they don't understand how to go about their bitcoin investment journey, by not making proper preparation and plan on how much that they will invest into bitcoin that will not affect their monthly expenses, and they used the money for their basic needs to invest in bitcoin. I will not call that investing, but I will call it a waste of time and that person is also gambling. This is because bitcoin price is volatile, and if he uses 90% of his monthly income to buy bitcoin and the other 10% is exhausted, and he wants to sell part or all the bitcoin he just bought last week because of an emergency, and bitcoin price dips, just like we have being experiencing the dip recently. He will end up selling at loss, which means, that investor in question might finally give up in buying bitcoin because of the volatile nature of bitcoin.
The best way to invest on long term investment and hodli without thinking of selling is to find out that amount that when you use to buy bitcoin weekly, or monthly using DCA that wouldn't affect your monthly expenses. You will also need an emergency funds for up to 3-6 months, so that whatever emergency that occurs, you will take care of it, and not using your bitcoin investment as your emergency funds. It is good to have reserve funds, also help you take advantage of the market in any case scenario that plays out. Investing and growing your bitcoin portfolio is what should be your focus, and not scattering what you are building.