I was just thinking about time management, and how I've improved. (Allow me to say, I am terrible at time management, but I've learned how to do it through trial and error.)
Meal planning and time management can actually be very good friends. A chief complaint I find that people make with healthy eating is the time, convenience will often trump price, and this slippery slope leads to poor eating choices or over reliance on processed/fast foods.
Time management to me used to be the idea of setting side a fixed time, say an hour, to do an activity and then, do another activity afterward, right? Problem was, I didn't do the activity, because I'd procrastinate. Or, I actually would do it, and then it took longer than expected. Now, I choose to think about what I need to do & what I need to finish over the course of a longer fixed time (week usually) and just pick one or two things to get me started. So, for example, if I wanted to bake something for a get together Saturday, I don't shop and bake on my late nights (Mon or Thursday), I pick up the items midweek and bake Friday, and while I'm baking, I can make quick meals like pasta dishes or salads.
So, think about your week, and sort of highlight things like family dinners, dinners out with friends, late work nights, errands & food shopping days. Once you've analyzed strengths and weaknesses, you can center in on making better decisions. If you work late, survey your work area for healthy take out choices so that when you're hungry, you have a plan. On lighter days, combine food shopping with a friend or family member and prepare meals together. Twice the work, twice the meals, but not twice the time.