-Drink more water first thing in the morning
-Make sure your eating breakfast
-Try squeezing in some activity like walking/hiking before work
-Workout at lunch time if your able and if not, go for a walk
-Add more protein to your lunch and avoid bread and fried foods
-Stand more at work rather than sitting for 6-8 hrs (make a standing work station)
-Make dinner your smallest meal of the day
-No eating within three hours of going to bed
-Cut down on your TV time
Finally, throughout the Morning/Afternoon/Evening watch your sugar and salt intake - this one simple tip will pay back big dividends in no time! If you're a female work on consuming 100 calories a day of added sugar (25 grams/day) and if your a male work on taking in 150 calories a day (38 grams/day).
If you can add a few of these tips in with your weekly strength and cardio routine, over the course of the next month, it will give you that boost that you have been looking for and will help get you ready for the summer season!