Irrespective of any circumstances a good investor is always patience and perseverance and will always tend to sustain his investment for long term.
That is, it should be. Real investors don't just look at what they can get today, but also at what they can receive in the future. They are more patient and determined about their plan and will do everything to succeed.
Despite the unpredictable situation of the market, like the dip. These people remain calm and don't think anything negative because they believe and deeply understand the market behavior. They are always optimistic rather than pessimistic.
This is different when an investor carries the behavior of being a passive investor, as they are more cautious with their actions.