Pain is an excellent motivator. 
Pain is what sobers us up
Emotional or physical? I use both to keep me on track, mainly
Emotional now.
Both man. I’ve recovered from the majority of the physical now it’s just mostly me being a cotton headed ninny muggin. Which leads to emotional pain.
Oh yeah, in the promises the first line says…..if we are PAINSTAKING about this phase of our development we will be amazed before we are half way through…….. the pain is apart of the process.