I don't think selling your bitcoin investment anytime you have financial needs is the best ideas more especially if you are a long term investor. First before you start investing in bitcoin you suppose to have source of income and set outside some funds for your basic needs and possible have an emergency fund so that you don't tamper your bitcoin any how.
You’re right!
For long term investors, having a/several source(s) of income as well as a backup fund is a necessity. Investments are meant to be nurtured for a very long time without being untouched, this is because, the more you touch the investment, the more the value of the investment is being reduced, and you could even get to the point where you’ll get used to reaching out to your investment whenever you have financial challenge. That’s why it’s important to prepare for such situations that’ll make you think of touching or liquidating your investment.