"You don't find your worth in a man. You find your worth within yourself… and then find a man who's worthy of you. Remember that." So please don't try to seek out your worth in approval from a man & own his personal opinion, because he's only human.
Plank with Alternating Leg Lift - this one is awesome too. Do a plank workout and when you feel done and exhausted keep going for another minute and add a few of these leg lifts at the end. You can FEEL it!