Seek out a mentor of power. It is good if the person is someone of your race and ethnicity who has made it through the system. Ask for feedback on your performance so that you can continually improve and grow No matter how significant your last accomplishment was, today it's old news. As long as you live, you need to be striving to accomplish goals and be the best you can possibly be. Make feedback a part of your education.
Mentors can be very helpful here because part of their role is to provide valuable feedback.
But don't limit your search for feedback to the mentor relationship. Then, take the information you gather from your friends and colleagues and incorporate it into your objectives for growth. And if you're not really challenged, you're not growing. If you don't grow, you can't make the contribution you're capable of making. So find out what you can do better and then do it, or initiate your plan to expand the scope of what you do or to move up a rung on the ladder.