First off, thanks to James Harper for the idea of doing this today.
Some of the big things I've learned in 2015.
1. There is no such thing as a one right way to manage. What I mean is, there isn't just one right way, it's about meeting the needs, encouraging, and impacting people. Every person is different, so your style of management needs to adapt for every person you come in contact with, or at least may need to be tweaked for some people, etc. What your doing may be great for one and might be falling far short for another.
2. If you don't do something pretty drastically different next year, you're very likely to be in about the same place at the end of next year. This one is simple when you say it, but its hard to do and even harder to really take to heart as it means moving out of our own comfort zone, which is something I struggle with for sure. Being in your own comfort zone, especially when life is pretty good for the most part, is very easy, and I like easy. But easy dosnt make me a better person and easy won't bring my dreams to reality.
3. If you want to improve yourself / your life, find people who are at that level and connect with them as much as possible. We tell our kids that who they hang out with will effect them and to be very careful, but somewhere along the way that fades and we just hang out with whomever comes along in life through work or hobbies, rather than choosing friends wisely. For me, this means trying to spend the majority of my time, or at least who I counsel with and get advice from, with people who I truly respect, who value what I value, who actually care about my success, and who have already achieved the sort of success in life that I want to achieve. Much easyer to learn from someone who has done it before than grouping with others who are hoping to run into success on accident.
A bunch bunch more, but those are the first three that came to mind. More to come in 2016 I'm sure!