How to overcome loss aversion

[Euler]

I think reframing your losses will help. If you lose think of it as another step to the win or further away from your next loss.

I remember reading somewhere about how a company would get encourage cold calling by telling the sales people that if they had a 1/10 strike rate then every rejection would get them closer to a sale, so get on those phones.

While trading is a little different, I think the principle of overcoming a fear is probably similar.