I always felt that my response to most of the situations in life are mechanical to which i have least cotrol. I have read from several books that we all are pre programmed because of our past memories which works in the background to behave in a certain way. I would like some body to advice me how to reduce this effect of the past memories in our present actions so that we can have full contol of the situations and act in a better way

What end purpose do you have in mind and to what degree is this programing? Self Image?

I found that if I find myself in a situation where I do that (act w/o thinking and don't know why)  I try to step back for just a second and mull it over.  Why am I doing this, or reacting this way?  Is that how I would really act, or is it just instinct?  Not all instict is right, and in the process, if you question urself enough, you can change your "Programming".  Some people call this thinking and acting outside the box.  LOL  We are not computers or machines, and now I find myself only reverting back to the mindless part of it if I am really sick or extremely tired.  Hope this can help at least a little bit

If you find that these past memories are having a significant negative effect on how you react and what you do now, there is a visualisation technique which you can use to effectively recreate your past, but this time in a way which will be positive and more in line with what you have come here on Earth to do.

As you obviously cannot go back in time and change the actual experiences which gave rise to those memories in your outer physical world, you will need to use the creative powers of your own imagination to effectively alter history in your inner one instead, in such a manner that you will now selectively focus on new memories which will give you a much greater feeling of being in control over your life to live as you best see fit.

Armed with these new subconscious memories, you will now react and behave accordingly in a way which will be of great benefit to you in whatever you set out to do in the present.

In order to recreate your past only one day at a time, try the very appropriately titled "Groundhog Day Technique", the name being derived from a well known 1993 film by the same name starring Bill Murray.

http://www.imdb.com/title/tt0107048/



http://www.superbeing.com/groundhogday.htm

Hoping this helps,

eye_of_tiger