Trading is always accompanied by fear but we should know how to deal with them. It's fine to feel afraid at times because we know that the possibility of losing will always exist in trading. What we should avoid as much as possible is the fear of missing out because it might only lead us to wrong decisions which can result in regrets later on. Those who fear being missed out are those who usually listen to what the majority say or do without even doing research first.
Being too emotional in trading might be more risky, you have to set-aside this and focus on the goal that youve set. Fears are normal but treat that one positively so you can know what to do and how to overcome the pressure of the market. FOMO is not good, it looks like you are being hyped without even analyzing the market, as a trader its your job to analyze so dont get tired of it.