चन्द्र (Chandra) पूजा -

For appeasing the Moon (Chandra), the standard recommended number of mantra repetitions (jaap) is 11,000.
Many texts also recommend increasing the count to 44,000 repetitions during the Kaliyuga, the current cosmic age, to maximize the benefits.

Chandra Beej (Seed) Mantra -
Om Shraam Shreem Shraum Sah Chandramase Namah
(ॐ श्रांश्रींश्रौंसः चन्द्रमसे नमः)

Chandra Gayatri Mantra -
Om Amritangaya Vidmahe, Kalarupaya Dhimahi, Tanno Somah Prachodayat
(ॐ अमृताङ्गाय विद्महे, कलारूपाय धीमहि, तन्नः सोमः प्रचोदयात्)

We must understand that in order to get anything auspicious in our life we need the blessings of our ancestors from many generations who, after leaving their bodies, remain deeply involved with our karmic structure in a very subtle but powerful way.
We owe an ancestral debt to them for which we must perform the sacred ritual of Shradh every year to ensure spiritual peace and contentment for our ancestors.
The lives of some people, due to a highly negative karmic structure from their past lives, get affected by an ancestral curse called the Pitra Dosha.
This ancestral curse is revealed after an experienced astrologer analyzes a person’s horoscope. Pitra Dosh makes people experience hurdles or obstacles in almost all major endeavours of their lives, despite putting in genuine & enormous efforts.
Because no matter how hard & diligently people affected with Pitra Dosh try, unless they get rid of this ancestral curse, problems will not leave their lives.