People losing money are usually silent. The only ones that we hear is the ones making money. That's why it seems that everybody is making money.
After an uptrend has ended, expect a move sideways to down. This will be the hard part to trade. Because it is difficult to know the trend has ended and difficult to make money in ranging markets or to know how long it lasts.
%% EXACTLY. One way to do it , say its strong trend or supeer strong tech trend + one has a good % profit + the sideways slop is not taking very much of your profit/ then let the profits run. Seasonals may help; say one has real good profit, SPY or QQQ related in late AUG. Then i almost always would just bet out beacuse SEPT sell in Us are so common. But we dont really know exactly when the trend will end; so have a plan for both ways. [I did not mean to be insulting for YM,DOW/DIA or SDOW ; just that was SPY was liquidity leader+ ES maybe tell more ,[ than YM or DIA 30 ],a 500or 505 is broader basket of stocks]