The truth about running people don’t want to hear
https://www.stuff.co.nz/life-style/well-good/motivate-me/111240962/the-truth-about-running-people-dont-want-to-hear
Basically, if you want to run a marathon you start out by doing 2km jogs around the block. Then doing 5km races, then try out a half marathon, etc etc
This is true for everything in life!