Avoid ending up like a friend, who used all the money he has to invest in bitcoin and also took a loan, promising the lender that he will pay back when he gets paid in a month, after a month he never received the salary, I warned him doing this, because he has no doubt mixed investment with 'whatever it takes', is it safe to call this greed? I don't know.
Now he wants me to lend him some money to at least pay the loaner back and later settle me, there is more, now I have to send him some money to buy some food.
You don't have to use all your money to invest, even if you are not married yet or have other responsibilities, the best approach when planning to invest in Bitcoin is to buy with some percentage of the money you earning, maybe through business or a job.
If you do this weekly or monthly you won't feel any pressure, always remember that health is wealth.
Taking big risks sometimes will bring big profits too if the calculations are right and accompanied by luck.
But I think what your friend did was purely blinded by greed.
People who take high risks are likely to still have a backup plan if the decision fails to reach.
I don't know or maybe your friend is in a very depressed mental state so just put all the money in and apply for a loan to invest in Bitcoin like that.
Forgive me in advance, I don't mean to insult or condescending your friend OP.
I will use this again and again to remind myself to be able to manage my emotions, make clear plans and not be blinded by greed when investing in crypto.
You are a good person OP, you take care of your friends like your own siblings.