Yes. Define your trading system and stick to it - mechanically.
Then you'll have no excuse to procrastinate, to paralyse yourself into inaction or to get in or out too soon, too late ot not at all.
As for a 'subconscious desire to lose' (and to cater to any residual gambling desire) - you can satisfy that each and every trading day by going down the bookies and putting £10 to win on the nag with the largest odds you can find.
I'm not kidding! It works.
That way, you're free to trade effectively having taken care of those 'other' issues.