Under the trial-and-error logic of trading, one must always adhere to the heavy trading rules and follow trading patterns.
The trial-and-error logic involves entering at the buying point after confirming the general direction, then observing the progress, and exiting at the selling point;
However, it is likely that the first entry may not be successful, so one must always be prepared to enter a second or third time until the general direction changes.
Many people often make the mistake of switching to a different variety after a failed first entry, looking for new opportunities.
This mistake is unfortunate; at the doorstep of profit, they knock once and fail to enter, giving up and losing the meat that was right at their lips.
When encountering a suitable opportunity, try to complete it, unless a major shift occurs. Otherwise, one will just watch the profit opportunity slip away.