Position sizing is the volume knob on your emotions.

Stop losses can save you from yourself.

Confluence and Technical Analysis: Technical analysts rely heavily on confluence to support their trading decisions. In technical analysis, confluence typically requires several indications of a buy and sell signal combined together to affirm a trade decision. One of the most common points in technical charting where a confluence of indicators is used to determine a signal is at a potential reversal. Reversals are commonly known to occur at resistance and support levels drawn on a technical chart. A price approaching a particular resistance or support line has the potential to reverse or continuing pushing through the trendline, which can send mixed signals. Thus, traders will often watch for several indicators occurring simultaneously or within a short-term time frame to confirm the trend through confluence. (Investopedia)