The importance of steady income cannot be overemphasized, we have always hammered on that fact in this thread. But beyond having a steady income it's most important that discretionary funds must come out from the steady income, if your income is not sufficient for your primary needs it'll be very difficult to sustain your DCA strategy. The best option that an investor that is in such a situation has is to reduce the costs of unavoidable expenses like food and the rest in order to boost his discretionary funds. That is from where DCA funds will come out from.
Having a correct approach for your investment and investment fund are very basic and also vital start for your investment pathway to profitable and successful ending. It's not easy to have strong hands, not yet strong enough as diamond hands, in order to achieve investment success, if you started with non-discretional investment fund.
"Invest what you afford to lose" implies on importance of a Discretional Investment Fund. That's it.
Start with research for getting fundamental knowledge.
Build up your Discretional Investment Fund that can be used for your investment with clear mindset of affording to lose it.
Start your investment accumulation as recommended by using DCA strategy.
Hold your bitcoin for a long time.
Success will come to your investment portfolio.