*karma* is a complex word . Every selfish *Karma* has a side effect . For example when a lady does cooking , it is for feeding her family . However, while operating it's flame, she is unknowingly causing the death of several creatures . It results in a negative reaction .
It is due to this reason that , Bhagavan Sri Krishna advises in His Bhagavat Gita to perform all *Karma* selflessly as an offering to Him .
The first vow one should take is * SaranAgathi* . (Seeking total and unconditional refuge at the lotus feet of Sri Krishna) . One should perform every *Karma* selflessly , without desiring it's fruits ( dedicating it to Bhagavan) . If so, the negative reactions of *Karma* does not affect him . Bhagavan shall return the fruits of those Karma to His bhakta with a blessing . Such a Bhakta will succeed in life . And he automatically escapes from all sins of his past *Karma* .
Daily bath is required to remove dirt from the body . Similarly , daily Nama-Japa is required to remove the dirt from heart . Sri Krishna's names are immensely powerful . When a bhakta chants Krishna-nama with faith , it automatically invokes Bhagavan whose presence automatically burns off all sins and dirt .
In the case of such a devout Bhakta , Bhagavan Himself will reveal through a medium of His choice if any *prayachit*( atonement) needs to be done for major past sins . Jyothisha is the means to know about past sins . However, accuracy of Jyothisha depends heavily on the seeker's Bhakti and resulting grace from Ishta-deva . There is no point in approaching a Jyothishi without any Bhakti and getting exploited by him .
Please chant this all purifying *Shodakshari Mantra* :
Hare Rama Hare Rama Rama Rama Hare Hare
Hare Krishna Hare Krishna Krishna Krishna Hare Hare
