Changing is a process of relearning, growing and developing, it can't happen instantly. It has to be gradual and constant, in this process patience and discipline are vital.
Remember it is a change that means you want to replace what is already there, and what is already there was built and stayed with you for a long period of time to undo it, it will require time and a new level of discipline, a new kind of knowledge, a new strategy, a new mindset and more effort.
What should not forget also is, change constant, it is a principle for growth and development. There's no way we can avoid it. The pain of changing is bearable than when we are forced to change. When we are forced to change we are nit given time or space to do so, but when we foresee the need to change and we begin the process it will no be easy still but at least it will be bearable.
Thanks @chbartist