Premanand Maharaj Ji
If karma decides everything, how should I act so I am not stuck in good and bad results?
Offer all karma to Bhagwan
Everyone is always acting, and is caught in the pleasure and pain that good and bad deeds bring. Do good deeds under Bhagwan's will and offer them to Him to reach Him.
We must do good deeds, deeds for Bhagwan, acting under Bhagwan's will, in favour of Shri Krishna, giving up what opposes Him, doing bhajan and helping others.