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.
I know that he is your friend, but you have to set limits as well. I don't know if your friend knows the old adage in bitcoin invest,
"Invest what you can afford to lose".
If not then you have to remind him that. But if you want to stick with him, it's up to you, but you should advise him on what to do and not just rely on your good deeds as a friend, just saying.
These words are the best. Some people do not understand risk following after little possibility of success