I just read an article in a women's magazine about working out, not for your health or anything like that but.. "Put in the hard work and discipline and the man in your life will be happy, he won't stray while you are looking good!"
it's really easy for me to get what i want most of the time. except i do this thing where i then go out of my way to convince myself i don't want it or to screw things up on purpose.