This trading strategy in crypto sounds easy, but it's not that simple. Selling coins can be done when prices are high, that's an opportunity we can take to get a profit. And no one can really predict the bull market in the crypto market.
Its not easy because we choose to be more greedy, this happen when you dont have target price while you are trading/investing. Dont be afraid to sold you coin whether to take profit or to cut losses as long as its your target price, having good strategies like this can help you survive in the future.