Of course, investing in Bitcoin can be easy, As you mentioned, there are huge challenges to sustaining investments over the long term, Maybe you don't yet have a secure source of income, Which is why it still seems very challenging for to hold on to your Bitcoin investment for a long time. If the way from where you are earning money is certain, that is, if someone's method of earning money is certain, then he will be able to easily solve any problem while investing. Before investing, many people may think that the most important thing to do to sustain long-term investments is to build an emergency fund. Actually, this is not the case because a temporary emergency fund helps us to continue investing without any fear or any pressure.
You also said the right thing about how to invest because if someone still has fear to invest in Bitcoin in the long term, of course he will not be easy to do it even though he has a regular income every month and can be enough to be used for the investment. So besides having to have a little fund for emergency needs, you also don't have to be afraid to do it because people who have the courage to invest in Bitcoin for the long term also have quite an extraordinary amount of assets at this time. So fear also needs to be eliminated before someone starts investing with a fairly wise goal, namely for the long term.