What are some good strategies to withdraw money from the trading account?

I always back away from withdrawing good profits only to lose them soon after. Very frustrating...

I am not dependant on trading income but would like to understand some good withdrawal strategies so I don't give them back to the market

Thanks in advance

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You said, you're not dependent on trading.
If you're successfully trading, don't withdraw the first years.
See your compound growth with steady max%capital at risk per trade. Important for performance measure.