How are those New Year's resolutions *cough* intentions going? Like most people, they probably went great for the first week and now you're back at work, they are starting to drift away.
First things first, don't beat yourself up. This is normal for most people.
Secondly, there's almost certainly a really simple trick you're missing. Check out this article for different things to try in order to make that journey an ongoing one. There will be one there that resonates for you.