Generally speaking, failures associated with entry, exit and stopout are the result of 1) lack of understanding of how your market typically acts
and after that, not having a volume based method for determining when larger forces are stepping in to change or alter a trend move.
This is characteristic of retail traders everywhere. "Conviction" has to be based on some objective standard. Most professionals use volume
based data points. "Just having a strong feeling" does not work.
Reverse Engineering
One method for developing a better understanding of your market is to reverse engineer successful trades, and that means to work from
the high or low of a trend move back towards the point at which you would be entering. Those who try this soon discover that their target
market moves in specific increments repeatedly. It is also possible to learn how to position stop loss in the same way. Finally, skilled traders
can (also) determine whether they have a system with a reasonable statistical edge, and this is done by the same analysis of at least twenty
(20) preferably thirty (30) trades. In my market that covers about a month.
Timing
In the market I specialize in, a scalp is 3+ and a swing almost always moves in increments of +10. My typical stop is 3-4. The final key to
the puzzle for me is timing. I know the approximate time(s) at which my market is likely to move AND how long typically, the moves will
last.
Good luck