The right effective time to buy and sell bitcoin is to buy as much bitcoin as possible when the price falls, then sell it when bitcoin prices rise.
I think that way it will quickly benefit.
Everyone must have the same thing as me, they want to get a big profit from bitcoin sales.
I agree when the price falls, but you still need to be careful when dealing like this cause if you do not properly monitor you trading activity, then you might get burnt. BTC is highly unpredictable at the moment. You might sell at a high, looking back to buy at dip and then the price keeps moving up.
Indeed, once resistance is broken, you will have a plan to buy back and just count the few losses. All I am saying is that it may sound as simple as you put it, but it is important to always trade like this with caution.