If you're being impatient on your Bitcoin investment you'll do a short trading/day trading which I think is not that profitable compared to long trading/holding but it really depends on the person and how good he/she is on handling investments. FUD is really a patience killer so better DYOR (do your own research) at all times.
I do not think selling is a bad option if you actually buy once again when the price goes down because some traders do not have big capital and the best chance for them to earn is by selling and buying bitcoins frequently which gives them profit and once the capital is big enough maybe you can just buy bitcoins and become an investor. I saw some traders turn into investors but it requires some solid capital first.
we had a long 2018-2020 bearish period, but that period is over. You could just wait it out. And get out of it without loss. People who have traded bitcoin have the most common loss of bitcoin. On the other hand, they have gained invaluable experience. And this experience is difficult to acquire without trading.
As someone who has seen adverse and joyous times, I can easily tell you that when times are good its easy to advice and suggest things but when the market was breaking everyone was trash talking for bitcoin and it was not easy to stick with the coin you had. You will see once a bear run starts there will be some negativity again despite no fundamental changes in bitcoins.