No, the best strategy is to invest in BTC at the times you think will be the most historic low of the last moment, that is, buy cheap and then hold and so on until the price rises, once the price rises you sell a little, but YOU DO NOT SELL EVERYTHING! since BTC is created to revalue, because in the long or short term, no matter how much the price falls again, the price will rise again and will break a historic high again, so you should take advantage of the drops and buy again at the minimum that your strategy tells you and then sell a little again when the rise, all the remaining little you leave it holding, and so on, the more BTC you have held, the more money you will have in the long term when BTC rises in value