I am sorry I can't advise you astrologically but I know it is a fact that the only way to overcome the negative (and positive) influences of our prabdha karma is by calling (chanting) on the name of the Lord.
Afterall He alone is the master of the universe and the planets and suns all revolve under His direction and will.
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"If a devotee accepts Lord Sri Caitanya Mahaprabhu as the universal guru and Lord Jagannatha as the Supreme Personality of Godhead Krsna, he is benefited by the combined mercy of Krsna and guru." - Madhya 13.18 purport