my friend had a mental block for like 2 years and wouldn't throw even a backhandspring. She recently got hers back and as soon as she would throw it by herself, all of her back handspring skills (ex. bhs step out robhs, robhs, robhs series, ect) all came back within 2 weeks. I was trying to help her get over it since like the summer. She got those confidence tape you can listen to, she also made a journal where she wrote down her goals and acomplishments (i did this too & it helps you see what you've acomplished everyday and it really helps with your confidence, even if your goal for a day it to just try one on the floor your next day can be throwing to by yourself on the floor.) she also used the debbie love advice. She had a box where all of her friends and herself could reflect and say nice things about how awesome her tumbling was (because she had a full before her block and she wouldn't throw a bhs) That also helped boost her confidence! Lastly, since she's young, one night she was in a private and she had her block at the time and she wouldnt throw her bhs on tumble track so my mom said, hey! if you throw your bhs on the tumble track i'll get you ice cream on the way home! & since she really wanted ice cream she threw it and its consistant on there still. then another day my mom was like soo what would would you like if you throw your bhs? and she said an elephant pillow pet! i want one to take to cheersport with me! and sure enough, she threw her bhs by herself on the floor and she still has it now. her new goal is to get her tuck before worlds & if she does that she can bring a friend to worlds with her cause she wanted to bring a friend. haha i hope this helped! (: