I had fear about bitcoin when it was $15k at that moment i thought maybe it will come to $10k but still confused when bitcoin reached $25k again. Currently it is standing at $28k. If it continues to rise, Some may lose the ability to buy bitcoins, so now is the right time to buy bitcoins.
I have observe fear and bitcoin and that is the best strategy that has help me overcome that fear that always trigger when I want to buy bitcoin. The best time to buy bitcoin is when everyone is afraid and think it will go lower than what has been seen. It is better to buy 50% of USD from your wallet into bitcoin becaause if really the price goes lower than the price you already bought, you can further do DCA with rest of 50% of your USD and what is good about this strategy is that, you can never loss from this as long you don't sell the bitcoin you buy, it always bounce back no matter what.