Personal achievement, success, and growth are all relative terms. There will likely always be ones richer than you. Many will possess more power and hold more sway in the community. Happiness comes from doing the best that you can, and from being able to provide for, and hold close those whose friendship and love you value.
I've seen successes and failures during that time, both personally and professionally. I think it's good to look back, and to consider carefully the choices you've made, to learn from them and to grow.
Sometimes finding happiness means making some difficult choices. Sometimes you may make the wrong choice. Recognizing that you have is part of growth, too.
So what do you do once that happens?