Is the 7th lord Mercury in the 6th house for a Sagittarius ascendant in the Navamsa chart good or not?

If you are a Sagittarius ascendant then following are some positive and negative impact of Mercury which is the lord of the seventh house placed in the sixth house in Navamsa chart

Positive Impacts

Mercury in the 6th house augments the analytical and problem-solving skills in relationships. They will be very practical and make a very detailed approach to relations (this can be a good but very detailed link) with people. This can serve to quickly resolve conflicts and misunderstandings. It's possible that this shows a service-oriented or health-conscious partner. Perhaps the partner was working in medicine, law, or social services. The native may meet with success through co-workers, employees (or employer), or in daily work associates. This position points to an industrious and diligent spouse. This partner makes a positive contribution to the well-being of the native's everyday life. It helps in the area of communication -- which can overcome interpersonal difficulties and engage the intellect for good reason -- because of that, if Mercury is well placed in your chart, it gives you great strength.
Negative Impacts

A person could then experience criticism or nagging from a partner, which would be a source of stress also for the individual. Unfortunately, analyzing the relationship too much can cause more damage than harmony. You may face partner disharmony on account of service or work-related things. The partner may have a tendency to be very judgemental, nit-picky, or argumentative, creating tension. This could then become a financial or legal dispute. In such cases, if by malefic planets, it is even more so. Conflicts can begin as small problems then develop into more significant controversies. The problem with this sort of a placement is that it will accentuate the faults rather than the strengths. The health of partner or of the native also affects the relationship. Mindful effort is required to stay healthy.

Following are some best remedies for this placement :

Chant Mercury beej mantra daily 108 times whcih is "Om Budhaya Namaha"
Perform Rudra Abhishek
On Wednesdays, donate green-colored items such as clothes, bangles, or vegetables to any needy person or in temple.
Feed cows on daily basis with green fodder or spinach .
Every morning offer Tulsi (holy basil) leaves to Lord Vishnu every morning.
Donate educational material like books or stationary on Wednesday
Do meditation on daily basis.
Respect and Serve Elders