Mentors often have a lot of experience that you can learn from. They have been in your shoes, they have made informed decisions, they have made mistakes, and they have learned from the school of experience. With a mentor, you do not have to go through the same challenges they went through, or make the same mistakes they did. They will share with you their stories and their mistakes so that you do not have to repeat them. They will also share with you the wise decisions or sacrifices they made to achieve something big.