How i improve this habit?

[Benayoun]

I hope this is the right place to post it, and if not sorry for that.
I am playing home poker with friend for around 20 $ in one game, blinds are 0.5/1 $.
I just started playing before one month, and i have big problem.
I managed until now to improve mt skills allot, after reading the book of P. Gordon, and practicing in fak money, i am improving.
But there is problem as Phil says in his book, predictable players are the best to play with, " i will rase when they dont have good hand and check/fold when they have good hand. "
This is the problem of mine, i am managing to read the other players most of times, and making what phil says, but me, they read me very easy.
When i get good hand i cant stop my smile, and when not they rase because they see i dont have, i started raising every time when i enter to hand as phil reccommanded to, but it dont help me.
I would like to know how i improve this one, i know it is kinda funny but if i wont improve it, my game is down in home poker.
Kind Regards,
Benayoun.