I've been in this world for more than 26 years now, and I have already been offered a lot of wise words from not necessarily wise people. However, there are about a couple that really stick to me even when they don't usually apply anymore.
I had a trainer who once told me that at work, I should always know where my loyalty lies. This is so true. When you climb the ladder of success, you serve more people and more people serve you and become equals with individuals you would not really hang out with otherwise. It is easy to be deceived by a lot of people who may mean well but do not have backbones, by people who mean to discredit you and ruin your performance at work, or even by people who wish to mean well but will never be able to prove themselves at work. It is important to always know who you should be loyal to. Loyalty pays, and it never hurts to have a friend or two even when the demands of work become strenuous.
Also, my favorite boss once told me that no matter how I felt, I should always GET UP, DRESS UP, and SHOW UP. It's more difficult than it sounds because we will always have sick days, and sometimes, it is better not to show up than work and not be as productive or as effective because you weren't really feeling well. However, it does not have to be followed literally. There are many ways to interpret the advice. It's just up to you to spice it up.
I've have heard many more wise words from different people that have both inspired and encouraged me. To them, I will always be thankful for sharing their wisdom. It would be so nice to live my life and have them become proud that they once mentored me into becoming an individual to be proud of.