One of my favorite podcast guests:
When traders flit from one type of trade to another, their promiscuity reflects an absence of such artistry and commitment. They have not found their trading vision. Often, their ideas are borrowed from others and not tested and made their own. One more journal entry or checklist will no more help such traders than they would help the bored overeater. If you want to eat healthy, you must be committed to an ideal of physical conditioning. If you want to trade healthy, your trading must be connected to a greater purpose and commitment.
Nice way of saying it.
Source: Brett Steenbarger, Ph.D., “The Problem With Promiscuity In Trading.” July 19, 2015. See http://traderfeed.blogspot.com/2015/07/the-problem-with-promiscuity-in-trading.html.