It can be very expensive to try to convince the markets you are right.
Notes from Wikiquote
System Trading
When a feeling dissolves, it ceases to be your enemy and begins to be one of your allies.
The elements of good trading are cutting losses, cutting losses, and cutting losses.
Quote text and notes from Wikiquote: Ed Seykota (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.