This is pure psychology and it is probably the hardest thing to master.
People shouldn't even attempt to master it. It's way better to focus on reliable forms of income rather than something so flashy and tricky as trading.
Is such a reliable venture better than the so called focus income that perhaps comes at the end of the month or week depending on the country. One hardly succeeds in a venture they don't have strong passion, zeal or interest in, so is about learning the skills to trade because many people make good money from it especially forex trade.