Honestly, selling our Bitcoin is really good when the price is high or during Bullrun. Many investors hold their Bitcoin until the next ATH in the seek of having a huge profit. But I will tell you that holding can be challenging for us, especially for beginners. However, we can never say that it was impossible because as long as we are very certain about our goal (earning more profit), we are also motivated to do so.
Yes, Bullrun was predicted to happen after halving, yet we can't be sure of that but at least we have an idea that could help us also to think about what we gonna do during that time.
What is a high price for Bitcoin then? It is impossible to describe that in an objective way in my opinion. If you consider an ATH as the highest possible price, you can obviously only know retrospectively whether you selling price was chosen well or not.
If it goes to 100k and you sold at 60k, did you still sell at a high price then? So you either go subjectively about it and define your own price points which you would consider high or doesn't really make sense to talk about a high price in the objective sense.
With all the crises that are going on currently, we might not see ATHs for quite some time anyway. No crystal ball will tell you, yet having a strategy never hurts and having some liquidity available to also be able to catch some downswing momentum and buy cheaper is never bad, too.