Selling your Bitcoin when the price increases is never a long-term investment, for me, you invested to make a quick profit, a good investor will not decide to sell his bitcoin because of the price increase, when we talk about long-term investment, it means having the mind to hold your bitcoin for a long time even when the price increases without thinking of selling it, for me, four years is too short for a long-term investment, at least 6 to 10 years is good, there are people who have been holding bitcoin for more than 6 to 7 years and have not regretted it because they trust in what they are holding and how it will benefit them in the future.
You can't say that selling your Bitcoin investment when the price increase is never a long time investment,
I think it all depends on the time you start making the HODLin if it is 6 to 7 months for example and you experience a massive increase in the price and start attempting to take advantage by selling your holdings to take profit you won't be considered as investor but a trader. Every investors is supposed to HODL thier bitcoin for 4-5 years before attempting to sell, even though some guys will not be patient enough to HODL thier bitcoin till this time maybe a year and 10 months and start feeling that they have get to a point where they should be attempting to sell. some investors can intend to hold their bitcoin for 6-7 months maybe when they see that they're in profit they start selling thier holdings but that does not make you a real investor, A real investor would
havewant to complete the circle of 4-5 years before attempting to sell some portion of thier holdings.
there are investors who has been accumulating and holding Bitcoin for years now maybe more than 10 years can decide to sell little part of their Bitcoin hodling when there is an increase in price you wouldn't call that short time because he sold when the price increase you don't know how long he has been accumulating and holding Bitcoin,
10 years is such a huge distance, I'm sure that they must have sold some portions of thier holdings early before then. Surely once you get to these extent you're free to sell little by Little and allow it to compound upon itself or better still you keep accumulating more bitcoin that's if you have not reach the status of overaccumulation.