It's really easy to say and think that you'll be buying the red. When it actually happens you need some balls to pick up the dip when there's no guarantee it's the bottom.
the theory that we say is sometimes very easy but by doing it if it happens it will be able to think again to look for other strategies and not practice the theory we usually say.
very difficult of course if you want to find the lowest price because each coin has the potential of each including ethereum which is difficult for us to predict because it often moves suddenly.