Gautam,
It has to become a habit, part of your normal routine so that you do not even have to think of it. I have signed up again and intend to make it so much part of my routine that to not do it would be unthinkable( THUD !) I'll keep you posted on how I do.
A great incentive is all those lovely bodies to look at, a disincentive is the comparison with my own sad looking specimen.
Oh well....