[@Tracyarmav]
First you are fairly new to changing. 
Second you are teenagers 
Third even with hours of practice you don't have complete control.

Remember that you have only been in the program a few months. Less then a year for most. I would say about six month. Teens aren't focused. They have a lot of hormones that would slow the process. Anger could slow changing or speed it up. If you use it to trigger a change then you have to use it every time for the first year until you figure out how to use other things to trigger the change.