1.) The “building”, "sculpting" and "toning" you want to achieve cannot be done with cute little dumbbells, no matter the repetitions. If you want real results, slowly progress to lifting heavier weights that digs deep, and makes you uncomfortable — even make you grunt a few times! (yes, talking to you, ladies!)
2.) Don't sabotage your workouts. Chilling out between weight sets is one of the most common mistakes. To increase strength, you need to do your second and third sets of reps with slightly fatigued muscles. Instead of taking a break, take a brief "pause" that lasts for just 15 - 30 seconds. Any more than that and you'll lose the benefit you gained from the previous set.
3.) Ok, if getting to the gym is tough today, just tell yourself you'll go and make it a light, easy workout (and mean it!). No pressure. Once you get there and start moving, chances are you'll naturally do more than you anticipated and you'll leave feeling great!