The best time to sell your investment often depends on several factors, including market performance, your investment goals, and whether your investment has reached your target price or value. It's important to assess the overall market conditions, such as economic indicators and trends, as well as your personal financial situation and investment strategy. If you have specific goals or a target return in mind, that can also guide your decision on when to sell.
You can also sell your investment if there's a pressing financial needs,or obligation that might prompt you to sell your investment no matter the market conditions.
The decision to sell investment should always be carefully considered because of the individual circumstances and investing strategy.
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.