I do my Sadhana very regularly. How can I know for sure that my bad Karmas or their ill-effects are getting cleansed and removed?
I tell you, drop everything and just become a Sharanagati. Being a Sharanagati means to have this firm faith and belief that all your Karmas have been cleansed. There is no balance that remains to be cleared anymore.
Why are you still stuck with analysing your Karmas? Just become hollow and empty. In fact, you actually have become hollow and empty – so take this truth for granted and have faith. Many times other people will advise you to do this or do that (to get rid of past Karmas) and you will get carried away into thinking “Oh! I still have to do this; I still have to do that to clear my Karma” and so on. You will get exhausted if you go on thinking like this, and even those who give you such advice will get tired after a while. Come to the present moment and know that life is new and fresh every moment.