From now on, I will keep waiting (taking profits of rest of my bitcoin, and waiting for chances to buy back).

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Blackbird fly...into the light of the dark black nightUnfortunately I did when I failed to buy a coin recently I have been watching for the past 6 months rise from $3.20 last weekend to $8.40 this morning.
Waiting for something to dip in price is always going end up being a complete and utter failure on your part in any case.
6 months ago it was $1.86

Just buy now or regret later.