I guess this is a question for the more experienced members.
The older I get, the more I realise that the only resource we have is time, and that everything is driven by this.
So with that in mind, looking back over your 5-year, 10-year, 20-year trading experience, is there anything about which you think "Yeah, that was actually a complete waste of time"?
Or have you found that everything contributes something in the end?
Be very interested/appreciative to hear your views.