Bad days in the world of trading happen. While some "gurus" may try and portray this is not the case, it's a lie. I recently had a bad day last week and wanted to use that as an example to help in answering this question and sharing my thoughts on how to build and maintain mental toughness when it comes to being a trader. I realize "mental toughness" is simply a random/broad statement, but I go into more detail in terms of how to accomplish a mindset for success.