There is no substitute for physical activity: no drug, intellectual flight or video game has the same power as difficult physical experience
Pretenders quit when they realize what competence will cost, that mastery is out of reach. Serious players are happy it doesn't come easily.
You become what you hang around. If you want to improve you need to surround yourself with those who challenge and inspire you.
Cut away the time-wasters, the delusional and the cowardly. When you free yourself of their influence your own potential increases tenfold.
"Swing this Kettlebell until you can't." Don't preprogram the engine to die at X number of reps or it will. Go until you can't. Simple.