Some go so far as to try to talk their clients out of making bad investment decisions, and thus talking themselves out of a commission. (tsinetwork.ca)
The first lets their emotions cause them to make really bad investment decisions; usually these people eventually quit. (arborinvestmentplanner.com)
The feeling that «I'm missing out on great returns» has probably led to more bad investment decisions than any other single factor. (investopedia.com)