As far as bitcoin investment is concerned, you need a source of income that will allow you to have discretionary income after you have sorted out your daily expenses so that you will have the money to invest in bitcoin in such a way that it will not stop you from sorting out your daily expenses, which might get you off the game partially or permanently.
You're are very correct in this, every intending and existing investor need to have somewhere money is coming to hom from, though it may not be very huge but it has to be steady to enable you divide it into segments to invest some continuously and keep some for personal use, for any investor to invest freely without any form panic such investor should first consider the amount available at his disposal whether monthly or weekly to enable him or her share the funds into segments, the one for Bitcoin investment goes in for it others are being kept for reseve to serve once the arises, why many people fail in continuing their Bitcoin journey is because they fail to follow the right step, your income determines the amount you should invest in Bitcoin unless your got some funds suddenly and you've checked very well that the amount available will be used in things you don't neccessarily need, then you can decide to buy in lump sum hence you never wanted to useless the money but on a general note, an investor is meant to have altleast a financial earning that will Carter for his personal stuffs and still invest without any pressure to avoid stoping his or her investment journey halfway.