Interesting article worth reading.
The major factor preventing many people from being successful is that they are not ready to step out of their comfort zone.
Like you said here
"Big goals and big ideas needs a high level of effort. You just need to step out of your comfort zone"
Time to step out of your comfort zone if big goals must be achieved.
Solid read
Yes, stepping outside the comfort zone is the most important and many people are not able to do it.