FOMO is basically a pointer that your emotions are in control of your actions. As a trader you need to have a strategy which must play out for you to take a trade and if it dosent as planned then your Stop loss will be hit and you wait for next signal. when FOMO drives your action you wont have a reason for placing a trade which is not supposed to be. just ensure you have a working strategy, have a trading book, manage your risk and be able to defend your trades in relation to your strategy.
I would say that's at least towards the good level, doesn't mean that it will go up, but if you are having FOMO then that means you are expecting it go up and that's a good thing. FUD is even worse than this, you end up losing money and that should be something that that hurts you the most.
I personally believe that FOMO could end up with a better result even though that is still emotions that you are dealing with, and we should not be expecting it to change all that easily. I get that some people think that it is going to be fine, but that doesn't mean that we are going to end up with something that should be hopefully all that return. I get that we are going to end up with not going up at times, and that's why FOMO may feel like it is not a smart move when it is not going up, but that doesn't mean that you are going to end up with a bad result at all times, sometimes if you have FOMO and buy which also needs a bit more holding, then you could make a profit without a doubt.