Hi &
What worked for me was packing things up the night before. I have precious little time in the mornings. Similar to what Mandalinn said, this takes a whole week usually to get used to, but make a sandwich or salad the night before & stick it in the fridge. In the morning it's grab & go!
I don't always recommend this, but if you only once & awhile have a store made frozen meal to take, you'll at least have a good serving of something & know exactly what's in it.
However, if you -really- can't make anything beforehand, and have to eat out, get something that you know is at least healthier on the menu.
Knowing you want to change is the first step.

I wish you the best of luck!