Unfortunatly you have to hear the "click". Until you hear it for yourself, nothing we say is going to get you motivated. While that is happening, just try going. Make it as easy as possible. Pack your clothes with you and go straight from work...anything to get you there. Start journaling everything you eat. This is soooo important. What an eye opener this can be. Remember what you are doing it for. Write those reasons done, make copies and paste them anywhere and everywhere. Give yourself a time line and create a calendar. Put it somewhere visable. Buy some star stickers(you know the kind we use to get as kids). Every good day you have, put a star on your calendar.
And most of all, just do it. Even if your tired. It takes 3 weeks to make something a habit. So the good news is, if you do this for 3 weeks straight, then you are probably in the clear.
I am in the same boat as you. If you want to talk, pm me!