My friend it depends the volume you trade. If you are trading with $5k and you lose $2k then there is a huge problem because you are -40%. You will need about +66%.
If you are trading with $50k and you lose $2k then it's ok. It means that you lost ~4%. It's easy to recover your lost with a good trade, like EOS right now which is going to reach 18-24 Billions USD market cap before it goes live in my opinion.

Important:
You should never trade/invest more than you can afford or are willing to lose.