How will my balance be Rahu Mahadasha? I was born on September 7, 1973, in Mumbai at 14:34 hours.

Hi,
I have seen your birth chart and following are my analysis :

First house lord : Jupiter
planets placed in first house : Rahu and Moon
Seventh house lord : Mercury
Planets placed in seventh house : Ketu and Saturn

Analysis :

You are having 1 and 7 axis of Rahu and Ketu, which is a bad placement in any one's birth chart. You will be facing the following during Rahu mahadasha :
1. huge stress every time
2. huge conflit in married life
3. huge losses in partnership and too much conflict on daily basis in partnership.
4. whenver there will be a antardasha of ketu / mercury / saturn you will face more losses, so please take good care during that period.

Overall it will not be a good period for you as there will be huge mental stress, unstable mind, fear of losses, sleepless nights etc. happen during this period.