what should be my fear?
You should:
Fear of being among the weak hands
Fear having not much information about Bitcoin
Fear of not having trust in the Bitcoin market
Fear that you will chicken out the moment the Bitcoin price plummet.
Fear that you don't have enough patience to wait for the next bull run and new ATH of BTC.
Fear that you would listen to all the FUD and negative sentiments of Banks and Anti-Bitcoin groups
In short, there is nothing to fear as long as you have patience and trust to what you are investing.
Fear is a normal human response when we don't understand what it is, so to not be afraid, we need to understand it. OP should equip themselves with bitcoin knowledge so that they don't have to be scared every time the market has Fuds.
Another thing is don't invest with money you can't lose, bitcoin can give you profit, it can also take your money, in investment, profit and risk always go together.