The 50s and 60s often bring measurable achievement across a kaleidoscopic range of family, career and community (and wider) impact. Yet it would appear that a large portion of these people reach a certain point in life and they're looking more toward retirement than looking forward to continuing to learn and develop skills, or serve nonprofit organizations pro bono, or inaugurate a new community program.
Others, though, even into their 70s and 80s, continue to seek, to grow, to learn, to give back. Yes, it can surely be difficult to start new projects, to look ahead to new areas of life, to seek out new friendships and relationships. Such inauguration blues—however initially daunting—can turn into some of the most meaningful and stimulating of life's often unexpected turns. Charles Darwin and Abraham Lincoln, for example, didn't make their mark until after turning 50. Colonel Sanders began KFC in his 60s; Grandma Moses started to paint in her 70s. Countless people, well-known and not, fit this profile.
Go for it. Look ahead. Inaugurate that new project or skill. As for those other 1600 inauguration blues, that's another story entirely.