Three checks to disarm bias before entering a position: read the chart with the ticker hidden (does the structure still look bullish, or were you projecting bullishness because you like the company?); state the bear case in one paragraph (if you can't, you don't understand the trade); and price-anchor reset (would I take this trade today if I had no prior position and the price were $5 lower or higher?). Each check is uncomfortable. That discomfort is the point.
The longer you trade, the more your biases accumulate: stocks you 'know,' setups that 'always work,' patterns that have worked recently. None of those memories are reliable signals. Every trade should be evaluated on the data available now, not on the residue of trades that came before. Easy to say. Genuinely hard to practice. Worth the effort.