Благодарственное письмо учителю на английском языке 120-140 слов

Dear Professor,
There is no right words to express how grateful I am for all the knowledge and all the things you taught me. Without all your effort to put me on the right path and your belief in me I would not be the person I am now. Thanks to you that I have experience and confidence for my future achievements. I will never forget that. I am happy to realize I am not the only student enlightened by you and that you helped so many people in achieving their dreams. Thank you for believing on me, I will never forget it. I wish you many years to come and many more students to be mentored by you. 
Forever grateful,
(Name)