You can't time the top perfectly and even if you can, you won't be able to offload any big amount.
Your best bet is to always sell on the way up but most importantly... BUY ON THE WAY DOWN!
If you don't think you can control your emotions during a -30% day for btc and click the buy button while︀ everyone panics, you are better off buying and HODLing.
Realistically, most people who have been︁ in crypto long enough, know that there is a very high chance that in 1︂ year time, the price will be lower than what it is now.
Do you have︃ the balls to sell everything now and potentially miss out on 80 to 100% more︄ gains?
Can you make sure you have that money ready to buy when the price︅ trades much lower in the future?
These are all things you have to keep in︆ consideration if you want to play the trading game.
Me personally, I suggest everyone I︇ know to just buy and hodl. Am I suggesting people to buy at these prices?︈ No.