To get an embedded rawl plug out of the wall can take a lot of struggle.  We'd far sooner leave them in and cover over them if there was a choice!  It is the same with some of our habits - particularly our thinking habits, and especially how we think about ourselves.

But some old ways of thinking or doing things simply get outdated and have to be thrown out.  Otherwise, they get stinky and make it so that I start to hate living with myself. 

It's a form of fitness  - is the way I usually think still fit my purpose?  If not, then it is time to CHANGE.  

Yes, it can be a struggle that takes a lot of effort, but there is something very satisfying when that rawl plug finally comes out!