Energy and enthusiasm are youthful traits, Madhu, and you have them in abundance. Energy may begin to flag (and does) but enthusiasm, the looking forward to the new, the unusual, the learning — that can continue. As you say, The urge to wander, whether in person or in mind and spirit!
OTOH, that phenomenon of the swiftness of time, oh my, it does keep accelerating. I don’t know any solution to that. But every so often I just sit down and breathe deeply, or look at something beautiful for a while. 