I've been contemplating somethig recently. We all expect that 2021 will be incredible for Bitcoin. May be the price will cross 50K, 100K, 200K, or even more. With that in mind, wouldn't it be better if I take an unpaid leave of absence from my work for 1 year and go to some exotic island with no internet and tv. My work spot will be reserved, so I have no worries for that. I could just put some sell orders between 50K and 500K and when I return, I will discover what happened. In this way, I will avoid the emotional decisions and selling too much too early.

That's an interesting idea because part of what any meaningful and prudent plan to sell some BTC on the way to the top would be to get real good grasps of what you would like to do before the BTC price movement actually happens, so in that regard, you should be striving to largely stick with your plan.
At the same time, I would not recommend taking away all discretion and converting your plan into a kind of Turing completeness.
I do understand the logical appeal to such an approach or something similar to that.