Any newbie to investing (or bitcoin) should be able to work out cashflow management systems and even various back up funds so that they will not end up touching their bitcoin at a time that is not of their own choosing and to prioritize building their bitcoin investment through various forms of buying, and so tapping into their bitcoin or selling their bitcoin should not be part of their concern, once they develop an investor's mindset and an investor's approach to their bitcoin, which yeah, they might not have that investor mindset from the very beginning, which might end up getting them into trouble in regards to making sure that they are building their bitcoin investment through buying bitcoin on an ongoing, regular, persistent and perhaps even aggressive basis, and selling any part of their bitcoin (except maybe spend and replace) should not be part of their plan, practice or anything that they inadvertently (or sloppily) fall into.
And this is where the problem lies...
Not only newbies but including some old folks who have been in this space for more than a decade yet they have no idea about their cash flow talk more of how to manage it. This is certainly one among the reasons we have more unsuccessful investors that end up selling off their suppose investment at inconvenient times. There is no way you won't temper with your investment if you lacked cash flow management because your cash flow guide shape your financial dealings including savings, investment and emergency funds.
Unfortunately, people have different mindset to this thing we called investment. Time frame and purpose is very vital when making investment because they are the factors that shape and prevent you from immature liquidation of your investment. Majority overlooked these two important factors and still think they have investment. Any investment that can be temper with at any moment or that's yet to attain it mature time frame or purpose is not an investment, it's save and spend sadly. I won't even advise spend and replace as they may end up not replacing it.