Many of the attributes listed in your post can be worked on as you invest, including patience, discipline and even building up the cashflow management and emergency funds.
Getting started is important and just figuring out the extent to which you have a discretionary income so that investment into bitcoin and building up back up funds (including emergency funds) is not beyond such discretionary income. If such investor is open to learn he can start out with very basics, such as merely starting out with investing $10 per week or $100 per week as he is learning.
I agree with you, most of the aspects like as patience, discipline, and managing emergency funds, are not the only things we need to work out from the beginning. They are skills that we gradually build as we move into the investment, especially when it comes to Bitcoin.
However, many individuals delay in investing because they believe they need everything perfect before they start, like having a lot of money or understanding all of the strategies. But, as you said, it's ok to start with something small, like $10 or $100 a week. The important thing is to ensure that it is within what someone can afford and doesn't affect our daily needs or responsibilities.
Furthermore, learning is just as important as investing. The more effort someone puts into learning and understanding how it works, the more comfortable they will become in making decisions in the long term. It's all about having a good beginning and moving forward gradually.