As we discard a limited mind and a life of limitation to step into the grandness of vastness, we realize infinity itself to be the Guru and all that we do as grace. As we traverse through consciousness that is the Guru, we become the Guru and each thought of ours is perfect in the now, as scriptures. Consciousness is the Guru, the wisdom.
Remember, you are the true guru of yourself. You are therefore always with Guru - your soul. However, at various stages you meet mentors. Mentors are like lighthouse who supports navigation in a journey called life. But, it is the innocence, vision, and purity of yourself (Guru within) determines the degree of success you can achieve.