Emotions do play an important role in trading and investing. Fluctuating prices affect psychology and I think if we don't have a good trading and investment plan, we can panic and sell our tokens at low prices.
But if we have a good trading plan and invest for the long term, I think we will get profit as long as we hold the tokens.
Holding token indeed gave us more potential profit if we wait patiently for a long period of time, but the risk and frustration will be worst. You don't know how the scenario will sustain, sometimes your asset dip so much and in fact my experience with my old tokens was really a night mare. It went zero value this time, just because of wrong mindset; without any further updates of the project community. Too much excitement leads us to loss of opportunity because of our emotions.