You can cost average and buy each time it goes down or up based from your budget. That's an effective strategy so you don't miss every buying opportunity or whenever a price goes down and another round of decrease happens.
Those who get carried away by their emotions, they need more experience and they need to be tough in the market so that they won't be moved by some dips.
Even though how tough we are, we can't be completely going to manage and control our emotions especially when we are just focused on trading. But if we are also doing another stuff, this will certainly give a huge help to divert our mind and forgot the market.
They have focused on trading and only relies to analysis and won't let their emotions involved due to it.