That's the global truth. If you climb up a mountain, later you will have to go back down. If you throw something in the air, will fall freely under the gravity. Similarly, if we see a bullish market, we need to keep in our minds that there will be a bearish market soon. So apply stop losses, book you profits and get ready to buy from the dip.
True, market conditions can also be likened to a tidal wave of water because the opposite of an increase is a decline, so some people say that it is a very natural thing to happen even though the cause is indeed there so that it has a big impact.