Psychologically, this is the critical point where many individuals will pull the plug, because they are too reactive to emotions as opposed to the longer-term mechanics of their timing strategy.
And typically, when traders pull the plug and exit their strategy, it is exactly at that time that the next profitable trend begins.
Fear of Not Being Right
Too many market timers care too much about being proven right in their analysis on each trade, as opposed to looking at timing as a probability game in which they will be both right and wrong on individual trades.
In other words, by following the timing strategy, we create positive results over time.
Fear of Missing Out
Every trend always has its doubters. As the trend progresses, skeptics will slowly become converts due to the fear of missing out on profits or the pain of losses in betting against that trend.
The fear of missing out can also be characterized as greed of sorts, for an investor is not acting based on some desire to own the stock or mutual fund other than the fact that it is going up without him onboard.