Exercise - Fourth basic necessity after Food, shelter and Clothing

I strongly believe that the current lifestyle will lead to a lot of health problems. Specifically for IT people staring the monitors 10 hours a day in an AC environment. Absolutely no exercise. I have a deep passion to exercise everyday, but i do it for a few weeks..then a gap of months..again restart the whole thing. Recently i have started last week : simplified exercises in the morning; 30 minutes of brisk walking in the evening; and diet of only vegetables and fruits at night. Hoping to continue it for next six months consistently. I tell this in a blog and i do have a reason behind it. If i say it in public, i need to stick to my commitment. And to keep my head straight, i need to consciously keep up my commitment. This attitude may be kiddish but hope it helps. I always have high regards on people who are consistently exercising. I appreciate them and am inspired by them. I like meeting people who really take care of their health. But the irony is my dad has been exercising consistently for the past 10 years and when he advises or asks me to exercise, i dont take it. I think its always like that with parents....when our parents say something, we lack the openess to agree to them...anyways my dad is a person who will never give up and once he told me " i will ask you everyday , have u exercised till the day u make exercising a habit." And he has been doing it for the past 7 years and finally the result is his daughter has realized the importance of it and is trying her max to it. Also now she is advising her friends to do the same. Hats off to you dad! Thanks for the unrelenting effort for 7 years.