Answer:
President of Mexico, Andrés Manuel López Obrador.
The current president of Mexico, Andrés Manuel, struggled to get to the presidency in three different occasions, and although in the first two attempts he was cheated out of winning the elections, he persisted in his attempt to become president and change the political outlook of his nation. To me, this tells me that one must persevere in his attempts to achieve one´s goals and, even if not successful at first, one should not give up and, if the objectives are clear, they can, eventually, through effort, become realities.
In particular, in my life, I can apply this form of wisdom as a practical course of action by persevering in my efforts to become a full time professor so as to be able to share the perspective upon society and life that I have grown to hold dear and edifying. This is a daily struggle, but, also it is a daily satisfaction.