I have used March 12 as the birth date, per usual India date notation.
When you said date: 12.03.1974, this could also be read as December 3.
If this is not correct, the reading isn't correct either.
Things don't work the way you want them, and you keep getting a lot of responsibility, because Saturn is in the 1st House. This isn't likely to change a whole lot since this is a birth position. (but, see comments below) You also have Neptune in the 6th house (your work)...and this can make it feel like you are running in place but never getting anywhere. The kids can have big upheavals with Pluto/Uranus in the 5th. Kids will be a source of big changes for you, and at times can be very overwhelming. I guess you already know these things, but are looking for answers. (also outer planets retrograde)
You can lighten up.

Through your marriage, you can do fun and impulsive things (7th H. sag).
You would not get so tired out if you found work related to hospitals, serving others in some way (mars in 12th H., sun pisces 10th H.). There are other areas which would work better with your personality, but I won't list them all now without some indication from you as to interest areas.
Kids will always be a source of problems, but you can also learn to appreciate them for their fresh, exciting outlook on life, and what they add. There will be enough times that they cause problems, so enjoy the fun while it's there.
Saturn in the first house (mentioned above) can make all work and no play. The good news about this placement is that the older you get, the less this influences you...so that by the time you reach old age, you will find yourself acting younger than anyone around you, and enjoying it! (capricorn rulership). In other words, the hard work now will pay off and give you good times ahead.
Currently, there is a situation that is causing you a great deal of discomfort. (pluto oppose saturn, 1/7 H). Be sure that you are not engaged in anything unethical. If you can't protect yourself from power plays, it may be best to quit and start over new. Only you can judge this situation. Just know that it has the power to harm you, if you don't follow recommendations to insure your safety/health and finances, and remember to act ethically and honestly at all times. This is a heavy transit, and it will affect you off and on for about a year. This can affect only you personally, but it will likely affect the marriage, if the problem isn't about the marriage. It is lessening now, but this problem will return when Pluto goes retrograde again in April 2009. Be aware that the problem isn't going away, it's just going into the background for awhile.
you'll get a breather around September 20th when things will run smoothly for awhile. Use the time to relax, rejuvenate yourself, and have fun. You deserve it.
Around January 10th there will be a conflict between home responsibilities and your work. Boss may be critical of your work, so take care in the time leading up to this to do your best, to give no reason for complaint, then it will not go bad for you, only the need to straighten things out a little or talk it out. Same with your wife and home, be sure to give loving attention and do any needed repairs to home before january so there is no grounds for arguments or problems...but if problems come, just talk it out. It will likely be emotional for you, or you will feel that you can't say what you feel. Make the effort to talk anyway. (saturn square moon 4/6 H.)
If other questions, please post.
Hope this helps...