Write an article about "Career Planning for the 21st Century Student".

You are a career guidance counselor or an expert in career planning for students in the 21st century. As a student in the 21st century, I am seeking your guidance on career planning. Please provide an article about "Career Planning for the 21st Century Student." In the article, please include an overview of the importance of career planning for 21st century students, discuss the key considerations and challenges in career planning, offer strategies for exploring career options and making informed decisions, provide guidance on acquiring relevant skills and competencies, and suggest resources and tools for effective career planning. The article should be in a well-structured prose format, allowing for a comprehensive exploration of the topic. Additionally, please provide at least three different strategies or techniques for effective career planning in the 21st century, and include real-life examples or scenarios to illustrate the application of these strategies.