That's the best step and action that you gotta do but I don't know what's the connection of it in trading when it's all about self development.
But I guess it's about the control that you have to do.
Trading and situation sometimes is not easily to have a worst life or bad life and you go into trading you may not do well because whenever you keep flashing to condition you find yourself it automatically affects your mental thinking causing you to lose concentration while trading. Before one could engage himself into trading such person must entirely neutral in terms of thinking about life situation and condition, with this you can be successful in trading but must people do join situation of life and trading and ends up becoming a failure because they might feels trading is a get rich scheme without knowing their capital depends on their profits to get while trading.
And for that reason, it is only showing that fixing yourself is important for you to get focused. While people might say that trading requires focus and time.
You can't do that if you're not at your best shape. It is not a requirement to be at your best shape at most times but it is going to help you think better and do better when you trade.
As you have said, the situation will be easier if you're in a better situation.