To make permanent change,s you need to commit to the long haul. If your resolve weakens, give yourself a boost. Changing bad habits takes discipline and work, and sometimes you might not feel up to it. The trick is to find healthy ways to treat yourself, whether that's splurging on a spa visit or new walking shoes.
That was from the January 21st issue of All You magazine - now in context they're talking about weight loss, but I really think that statement can be used for all areas of your life: if you want to quit smoking, stop drinking soda, improve your general outlook on life, be a nicer person, etc. Anything you want to change in your own life is going to take work and commitment - and duh... you're going to have days you don't feel like doing it. You may have weeks you don't feel like doing it. But I think we all owe it to ourselves to be committed to OURSELVES and strive for what makes us better people.
And that's really all I have to say about that (imagine that in your very best Forrest Gump voice)