We add new belief system every day consciously and unconsciously based on what we are learning or what we have learned until now. 

We have a supportive and unsupportive belief system based on what we have learned from friends, teachers, siblings, family, media, internet, culture, education experiences, but rather personal interpretations or misinterpretations of those experiences.  

At some point, we have to update the software to reset old habits and create some new belief system. 

What’s necessary it’s to repeat the new habit for as long as it takes to reset the old belief system.