Via negativa: In theology and philosophy, the focus on what something is not. This can be practice and with great reault. To have bias and truly try to tackle this bias. To feal long ( right brain side ) and to criticize this bias ( left side brain ) . In the beginning you feal tired from this practice. But later it became a habit. In this way you melting your ego and avoid the cognitive shortcuts. Simple things with great value are the best!
I suggest a cognitive treak to remain alert to signals contradict your bias. Actively try to find why this is NOT what you looking for. Actively proof to your self your trading bias.