The strength of youth,
The wisdom of age...
Live long enough and the former gives way to the latter. It isn't that youth is not smart or intelligent, or even wise. But when you come to rely less on power and stamina, you learn to think before acting; age teaches us the "way" things are. Experience combines with a mental strength and we learn to temper our responses for a better outcome.
Enjoy your strength, nurture wisdom, for it is a blending of the two that speaks to divine nature in each of us.