That's why aside from learning DCA they should learn how to manage well their finances since this plays big role on their success for long term investment on bitcoin.
Yes, money management is an important issue in investment that cannot be ignored. The first thing that comes to investing is money. If I have a source of money then I will be able to invest and have the opportunity to do so for the long term otherwise whatever plan we make cannot be implemented. Before any investment we should focus on money management. Those who have source of money will get opportunity to invest regularly. In terms of investment, he can invest not only in DCA but also a large part of his money if he wants. However, those who want to invest on a regular basis find DCA to be the most useful strategy for the long term, he will have the opportunity to build a good portfolio of his Bitcoin investments.