My rookie tip: If you ever sell, don't sell it all, keep at least 10% of your corn for hodling.
I am thinking about a formula that aim to NOT sell more than 10% for every range - such as every 100% (or maybe less selling and a greater range?)
But it would go something like this:
Let's say that you started buying BTC at or near the top of the last bubble, but you stuck with it and you kept dollar cost averaging in. Accordingly, you have a average cost per BTC that is around $8k per BTC, and so you are a bit concerned about what to do.
You decide that you will sell no more than 10% of your stash for every time that the BTC price doubles (if it does)
Therefore, you have authorized yourself to sell 10% of your stash at any point of your own choosing at each point within the below prices ranges:
1) $10k to $20k (10% of total stash)
2) $20k to $40k (10% of total stash)
3) $40k to $80k (10% of total stash)
4) $80k to $160k (10% of total stash)
5) $160k to $320k (10% of total stash)
6) $320k to $640k (10% of total stash)
7) $640k to $1.2m (10% of total stash)
Etc. etc. etc
Yes, i am also a fan of this ladder approach. My message was more for the kind of "i'll sell it all at now, because who knows if bitcoin will ever reach this high regions in the future again"...
Better version: If you intend to sell it all
when moon, sell only 90%!