Everybody needs Guru in his life to guide him. All teachers who taught us starting from Alphabets to the level what we studied are our Gurus in our life. We should respect them.
Spiritual Gurus likes Sri Sankaracharya, etc are the walking Gods. They are so polite and humble yet powerful.
Aadi Guru is Sadasiva. Sankaracharya is in the middle and finally my Guru. These are all the Gurus I have. My salutations to all these series of Gurus.
Don't sweat the small stuff and it's all small stuff.
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease