Ken You got your answers in your post. Just do the opposite when the market slows down. Now you have to time it, when to flip the switch.
I think no one can help you better than yourself. Ask yourself, what makes you overtrade? If you are triggered by losses that means you are frustrated and if your wins are pushing you to trade more that means you are driven by greed. Whatever be the case, try to self analyse.
I, sadly, agree -- sorry to say it, but if you've been trading since the 90's...and you're not yet, consistently, profitable...the chances are slim you'll truly prosper.
I'm making progress..... thanks to many of you eg I cut down on size and frequency of midday trades, which is helping!
Trading is No, trading is neccessary for my success as an educator, because unlike my competitors I base my training on real trading experience. For hobby, I play sax