Sometimes reality changes. Sometimes it seems that it has changed because other people start to behave as it did.
Sometimes you are quick to adjust. Sometimes it is hard to accept the new reality. Sometimes the reality did not change and adjusting is the bad option.
The hart part is knowing in which position you are. If reality really changed, the quicker you adjust, the better. But if it only seems that it has changed, going with the crowd will leave you at a disadvantage.