Keep Your Muscles on Their Toes
If you see your progress plateau, take a look at the frequency of your weight training - are you working the same muscles every day? If so, try alternating upper- and lower-body workouts each day. This allows muscle fibers to repair themselves and grow.
Take a look at your calorie-burning workouts and stretching workouts. Flexibility is key to weight training, especially for avoiding injuries, and aerobic workouts shouldn't be overlooked, either. Push yourself when it comes to workout intensity - and if you're not sure how to ramp up your workouts safely, then talk to a personal trainer, who can show you how to maximize your results without hurting yourself.