Forex can be a great part of trading if you have all inevitable parts of trading , so traders should choose the right trading instruments first of all.
It’s up to the trade to make it an addiction or not. Everything overdone can turn into an addiction. A good trader always analyses his growth/downfall and takes the right measures.
Trading or not, if you over do something, it will turn into an addiction. As traders, we should know when we are crossing that line and analyse our trades from time-to-time to avoid its consequences.