Scripture connects patience to strength rather than passivity. Being slow to anger is described as understanding; being quick to it is described as folly. Patience is what a man does with the gap between provocation and response.
James 1:19–20
Quick to listen, slow to speak, slow to anger—in that order, deliberately.
JAS.1.19-20
Listening and Doing
19 My dear brothers and sisters, take note of this: Everyone should be quick to listen, slow to speak and slow to become angry, 20 because human anger does not produce the righteousness that God desires.
Patience grows as fruit rather than being manufactured by effort alone.
GAL.5.22-23
22 But the fruit of the Spirit is love, joy, peace, forbearance, kindness, goodness, faithfulness, 23 gentleness and self-control. Against such things there is no law.