I had set some rules before trading so I know how much I can loose it or have capacity. Also I have a stop loss always set so that even it triggers it is a limited loss . In trading , one always can’t make money and you will incur losses as well and should be ready for it .
This means that you only spend that you can afford to lose, the same on gambling.
Losses in trading can affect the trader either severely or mild depending on how the trader handles it. Pro traders think that they not get affected by any lost but in reality, all of us do it is just some of us can handle it in the most suitable and convenient to them that they can just simply accept or ignore it within a few minutes.
Traders should always know things that they love to do like playing online games or paling basketball for that when a trader loses then he can immediately divert his attention to a different thing and may provide him a positive outlook again. This strategy is applicable to me but some may not because all of us still have individual differences.