In my D1 and D9 chart, only Mars planet is aspecting 10th house of Kundali. There is no involvement of any other planet in anyway. What can you say about my career?

Mars is a planet of willpower, energy, commitment, strength

It has three aspects – 4th, 7th and 8th

Mars through these aspects tries to imbibe in the house the qualities it stands for

Considering that the 10th house stands for the profession, it is a boost but then we need to look into

What Zodiac rules the 10th House?
Where is the 10th House Lord placed?
What is the House in which Mars is placed
What is the Zodiac in which Mars is placed
Where is the planet that rules the Zodiac(in which Mars is placed) in the Astrology chart?
What Mahadahsa and Antardasha are going on?
What are the planetary transits in action?

All this will decide the outcome

For more answers linked to Astrology, you can refer to the following link

Hope this helps

God Bless!