Wait patiently for the real perfect trend in the market, and don't make predictive interventions.
"Timing is everything", buy at the right time, and sell at the right time.We must know where is the time to sell, buy and hold. it's about how we can use the chance perfectly.
Trading is not something to do every day. Those who think that they need to trade at any time ignore a condition, that is, trading requires a reason, and it is an objective and appropriate reason.
You are absolutely right. Perfect timing is the best thing in trading. Hold and sell at the best time. It is not easy to trade but there is always a process for learning. Doing mistakes in some instances but limit the mistakes and have lots of patience in trading.
To find the perfect timing is not easy as it says because you need to analyse the moves of the coin, find if that price is already in the dip and buy it. Once you bought the coin, you do not need to panic if the price is down but you can buy more if you want. Otherwise, you can only just wait. It is normal doing mistakes but as long as we can learn from the mistake and we know how to fix it, we will not make a mistake in the future because we have the experience that will help us to prevent the mistake.