How to stay flexible and unbiased?

I have been always facing the challenge to deal with bias due to existing positions or previous trades.

Recently I had homerun on short swing, so in recent week I tend to hold short longer, turning profit into loss because I was right on 5min timeframe but wrong on 30min timeframe.

Bias due to recent trades or existing positions are very common, at least to me. The moment I become all cash, my mind immediately turn to much sharper mode and can read the market flow much more clear. And I can start to hit orders with better execution.

A lot to learn as always...