It is painful when you buy the dip and it just keeps getting dipper or you take profit and convert to usdt only to see that the coin you sold keeps pushing up in price. The best thing is to swing trade frequently and utilize stop-loss too.
The market is really unpredicted, we cant say if we made the right decision for buying or selling because we never know the next movement of the price. Thats why its better to only invest a spare money or a money you can afford to lose so whatever happens with your investment you're prepared because its not a money meant for important things.