Premanand Maharaj Ji
Is my fate fixed by past karma, or can present actions change it?
Past karma and new karma
Past good and bad karma shaped this body and its prarabdh (destiny). Good new karma can overcome the old, but if new karma stays only good and bad, the cycle of birth and death goes on.
If our new karmas are good, we can overcome the old karmas, do ourselves good and attain Bhagwan.