Mars in leo in 10th house with mc almost on top (maybe 3 degrees further) , is it rare, what does it mean and professional potential and destiny of people with these
Astrology is a relationship process. Everything affects everything else. You cannot take out individual aspects and look at them, it has to be viewed as a whole.
As such, you are really looking at what challenges you are likely to experience. Your natal chart shows the challenges that are there for you in childhood and adolescence, as well as your general tendencies in how you react to the world. But to see your challenges by the time you are almost 25 years old, you have to look at both your natal tendencies, and the current challenges. One of the ways to find current challenges is to look at your progressed charts. Your secondary progressed return chart shows the general challenge areas. Your tertiary one shows your feeling/emotional issues in dealing with the 2ndary, and the minor one shows the stuff you tend to think about in dealing with the 2ndary.
Thus said, Mars is still in the 10th house but no longer in Leo.
Mars, the planet of ego drives, is very much at home in this, the house of highest ego expression. This challenge indicates many positive energies and, as usual, certain problems if you are not careful and do not recognize the needs of others.
More than any other, this challenge arouses your ambition to achieve. If you can identify with a project, you will work extremely hard at it until it is done. It is especially important now that you find an independent project that requires your individual initiative and effort. You should try to gain independent authority in your work at this time because you are not likely to be very tolerant of other people’s authority over you. You may prefer to be your own boss. But your energy will make an impression upon people who are in a position to help you, as long as you do not challenge them unduly.
One of the problems of this challenge is that you are much more likely to be in conflict with authority figures than at any other time. Parents, employers or bosses, or even government officials may feel it necessary to stop your efforts in various areas. But this will happen only if you insist on being a threat to them; try hard to be useful to them, not a threat. If you can align your interests with theirs, these people can help you.
Conflicts with coworkers may arise if they feel threatened by your efforts to get ahead. You should try to play down such conflicts unless something real is at stake, for they will only block your efforts and make advancement more difficult. If you can remain reasonably conscious of other people’s interests and not come into conflict with them more than absolutely necessary, this challenge can help you make great progress toward the objectives you have set for yourself. But if you feel that you must defeat every challenge from others at all costs, it will probably cost you all the progress you might have made.
To really understand, you need to know what your normal way of dealing with challenges is, and how you tend to respond to the world, which comes from your natal chart. Then you will know right away what specific pitfalls the above has for you and how to avoid them. But learning that is a process, and altho astrology can help, much of it is just plain life lessons.
Hopefully this is helpful.