When the going gets smooth, that's how you know you've lost your way.
The day you feel you've made it and can now sit down to eat drink and make merry, that is the day your life loses purpose, the day you deserve to die.
Every day has got enough trouble in it.
The right path, the one you should be on, is never an easy breezy downhill coast. It's hard and steep, but that's why you get better. It strengthens you.
Iron sharpens iron. With more success comes aptitude for greater challenges. That is the essence of growth.
Enjoy the growth itself. Seek the pain it brings.
All other amusements are dishonorable distractions at best.