Only trade what you can handle psychologically. Additional to financial loss, the psychological setbacks are huge.
Earlier I used to trade everything possible: crude, stock-index futures/options, cash. I started feeling very lethargic at times. It developed into an addition- I started to pray that weekend should end as soon as possible, so that I can start trading again.
My family members started saying: "Isi screen me ghus jao
" (Go inside this screen). Falling hair follicles was another thing readily noticeable
Later I dropped commodities completely, reduced F&O in stocks. Started focussing only on trades with good Reward/Risk. Stopped analysing every time (more analysis, never makes a better trader).
This was my part
So it all boils down to- how comfortable you feel in trading any instrument and amount of trading. It feels like an addition, may be its time to reduce some.